SaraSuite.app for macOS, built on Linux; 1.3.0

Co-Authored-By: Claude Opus 5.5 <[email protected]>

Core.py

@@ -1,11 +1,22 @@
 """Shared app-wide constants: paths, palette, theme.
 
+Paths follow each system's own per-user conventions (no admin needed):
+    Linux            Windows          macOS
+    ~/.config        %APPDATA%        ~/Library/Application Support  (settings)
+    ~/.local/share   %LOCALAPPDATA%   ~/Library/Application Support  (programs, SaraSuite's data)
+    ~/.cache         %LOCALAPPDATA%   ~/Library/Caches               (caches)
+so the SaraSuite layout below them (SaraSuite/<Program>/...) is the same on all
+three. (On macOS settings and data share one folder, as Mac apps' do: the
+programs' config folders and SaraSuite's Programs, Receipts, ... sit side by side.)
+
 The palette and theming mirror SaraFem's Core.py (which mirrors SaraView's),
 and read the same shared ~/.config/SaraSuite/Themes/*.toml files, so a theme
 picked for one Sara program looks the same in all of them.
 """
 
 import os
+import re
+import shutil
 import sys
 from dataclasses import asdict, dataclass, field
 from pathlib import Path
@@ -16,8 +27,16 @@ import tomlkit
 AppName = "SaraSuite"
 # Compared with the latest Gitea release to offer self-updates (SelfUpdate.py).
 # Bump it, then run Packaging/Release.py, to publish a new SaraSuite.
-AppVersion = "1.1.0"
-IsFrozen = bool(getattr(sys, "frozen", False))  # running from the AppImage
+AppVersion = "1.3.0"
+# SaraSuite.app's launcher sets this to the app's path (Packaging/BuildMacApp.py).
+MacApp = os.environ.get("SARASUITE_APP", "")
+# Running packaged: from the AppImage / .exe (PyInstaller), or SaraSuite.app.
+IsFrozen = bool(getattr(sys, "frozen", False)) or bool(MacApp)
+IsWindows = sys.platform == "win32"
+IsMac = sys.platform == "darwin"
+IsLinux = not IsWindows and not IsMac
+# Matches manifests' Platforms / Platform.
+Platform = "Windows" if IsWindows else "macOS" if IsMac else "Linux"
 # Bundled in assets/fonts and always registered, so it works as FontFamily
 # without being installed. Any other FontFamily is looked up among the
 # system's installed fonts.
@@ -25,9 +44,23 @@ BundledFontFamily = "Fixedsys Excelsior"
 ActiveFontFamily = BundledFontFamily  # set by ApplyAppearance, read by BuildTheme
 
 Home = Path.home()
-ConfigHome = Home / ".config"
-DataHome = Home / ".local" / "share"
-CacheHome = Home / ".cache"
+if IsWindows:
+    ConfigHome = Path(os.environ.get("APPDATA") or Home / "AppData" / "Roaming")
+    DataHome = Path(os.environ.get("LOCALAPPDATA") or Home / "AppData" / "Local")
+    CacheHome = DataHome
+    # Start Menu shortcuts, and the Startup folder (run at login: SaraSortd's
+    # stand-in for a systemd user service).
+    StartMenuDir = ConfigHome / "Microsoft" / "Windows" / "Start Menu" / "Programs"
+    StartupDir = StartMenuDir / "Startup"
+elif IsMac:
+    ConfigHome = DataHome = Home / "Library" / "Application Support"
+    CacheHome = Home / "Library" / "Caches"
+    StartMenuDir = StartupDir = None
+else:
+    ConfigHome = Path(os.environ.get("XDG_CONFIG_HOME") or Home / ".config")
+    DataHome = Path(os.environ.get("XDG_DATA_HOME") or Home / ".local" / "share")
+    CacheHome = Path(os.environ.get("XDG_CACHE_HOME") or Home / ".cache")
+    StartMenuDir = StartupDir = None
 
 SharedConfigDir = ConfigHome / "SaraSuite"
 ThemesDir = SharedConfigDir / "Themes"
@@ -45,6 +78,15 @@ ReceiptsDir = DataDir / "Receipts"  # what each install placed, for exact remova
 PristineDir = DataDir / "Pristine"  # the default configs as last installed (merge base)
 BackupsDir = DataDir / "Backups"  # displaced files and pre-merge config copies
 DownloadsDir = CacheHome / "SaraSuite" / "Downloads"  # extracted source archives
+# <Name>.pid and <Name>.log of each service SaraSuite runs itself (Services.py).
+ServicesDir = DataDir / "Services"
+
+# Linux: whether systemd runs the system, and so --user services. Without it
+# (runit on Void, OpenRC, s6, dinit, ...) services run the way they do on
+# Windows (Services.py), started at login from AutostartDir. macOS runs them
+# that way too, started at login by a LaunchAgent (MacSupport.py).
+HasSystemd = IsLinux and Path("/run/systemd/system").is_dir() and shutil.which("systemctl") is not None
+AutostartDir = ConfigHome / "autostart"
 
 # Bundled read-only files (program manifests, fonts). Inside a PyInstaller
 # build they're unpacked to sys._MEIPASS rather than next to the code.
@@ -81,11 +123,50 @@ _ThemeRoleMap = {
 }
 
 
+# The themes every SaraSuite program seeds into ThemesDir if they're missing
+# (same values as SaraFem's and SaraView's), so whichever program is installed
+# first, the folder and these three are there to choose from.
+BuiltinThemes: dict[str, dict[str, str]] = {
+    "CatppuccinMocha": {
+        "Background": "#1e1e2e", "Surface": "#181825", "SurfaceAlt": "#313244", "Border": "#45475a",
+        "Text": "#cdd6f4", "TextMuted": "#6c7086", "Black": "#11111b", "White": "#cdd6f4",
+        "Red": "#f38ba8", "Orange": "#fab387", "Yellow": "#f9e2af", "Green": "#a6e3a1",
+        "Blue": "#89b4fa", "Purple": "#cba6f7",
+    },
+    "Forest": {
+        "Background": "#1b2420", "Surface": "#141b17", "SurfaceAlt": "#243029", "Border": "#334539",
+        "Text": "#d6e5d0", "TextMuted": "#7c9184", "Black": "#0d120f", "White": "#eef5ea",
+        "Red": "#e0685a", "Orange": "#e0a458", "Yellow": "#e0c458", "Green": "#7fb069",
+        "Blue": "#5c9e8f", "Purple": "#9b7fb0",
+    },
+    "Gruvbox": {
+        "Background": "#282828", "Surface": "#1d2021", "SurfaceAlt": "#3c3836", "Border": "#504945",
+        "Text": "#ebdbb2", "TextMuted": "#a89984", "Black": "#1d2021", "White": "#fbf1c7",
+        "Red": "#fb4934", "Orange": "#fe8019", "Yellow": "#fabd2f", "Green": "#b8bb26",
+        "Blue": "#83a598", "Purple": "#d3869b",
+    },
+}
+
+
+def EnsureSharedThemes() -> None:
+    """Create ThemesDir with the built-in themes that aren't there yet
+    (never overwriting one: it may have been edited)."""
+    try:
+        ThemesDir.mkdir(parents=True, exist_ok=True)
+        for Name, RoleValues in BuiltinThemes.items():
+            ThemeFile = ThemesDir / f"{Name}.toml"
+            if not ThemeFile.exists():
+                ThemeFile.write_text(tomlkit.dumps({"Palette": RoleValues}))
+    except OSError:
+        pass  # read-only or full: the built-in Catppuccin Mocha values still apply
+
+
 def ApplyTheme(ThemeName: str) -> None:
     """Mutate Palette in place from ~/.config/SaraSuite/Themes/<ThemeName>.toml.
-    Falls back to the built-in Catppuccin Mocha values if the file is missing
-    (SaraFem seeds that directory; SaraSuite only reads it). Must run before
-    any control reads Palette.X."""
+    Seeds the built-in themes first (EnsureSharedThemes); a missing file keeps
+    the built-in Catppuccin Mocha values. Must run before any control reads
+    Palette.X."""
+    EnsureSharedThemes()
     ThemeFile = ThemesDir / f"{ThemeName}.toml"
     if not ThemeFile.exists():
         return
@@ -192,14 +273,39 @@ def ChildEnvironment() -> dict[str, str]:
             Environment["LD_LIBRARY_PATH"] = Original
         else:
             Environment.pop("LD_LIBRARY_PATH", None)
-    for Key in ("PYTHONHOME", "PYTHONPATH"):
+    for Key in ("PYTHONHOME", "PYTHONPATH", "SARASUITE_APP"):
         Environment.pop(Key, None)
+    if IsWindows:
+        # Python on Windows otherwise reads/writes text in the old ANSI code
+        # page; every Sara program assumes UTF-8 (their TOML files).
+        Environment["PYTHONUTF8"] = "1"
     return Environment
 
 
+def UserPortalsSupported() -> bool:
+    """Whether xdg-desktop-portal reads portal files from
+    ~/.local/share/xdg-desktop-portal/portals (1.17 and newer), so installing
+    one needs no password. True when it isn't installed either: then a
+    portal file can't be used anywhere, so it might as well not need root."""
+    import subprocess
+
+    for Candidate in ("/usr/libexec/xdg-desktop-portal", "/usr/lib/xdg-desktop-portal",
+                      "/usr/lib/x86_64-linux-gnu/xdg-desktop-portal", "/usr/local/libexec/xdg-desktop-portal"):
+        if not Path(Candidate).is_file():
+            continue
+        try:
+            Output = subprocess.run([Candidate, "--version"], capture_output=True, text=True, timeout=10).stdout
+        except (OSError, subprocess.SubprocessError):
+            return False
+        Found = re.search(r"(\d+)\.(\d+)", Output)
+        return bool(Found) and (int(Found[1]), int(Found[2])) >= (1, 17)
+    return True
+
+
 def CurrentDesktop() -> str:
     """First entry of $XDG_CURRENT_DESKTOP as-is (e.g. "COSMIC"), used for
-    portal descriptors' UseIn= and the <desktop>-portals.conf file name."""
+    portal descriptors' UseIn= and the <desktop>-portals.conf file name.
+    Empty on Windows."""
     return os.environ.get("XDG_CURRENT_DESKTOP", "").split(":")[0]
 
 

Installer.py

@@ -10,7 +10,9 @@ import datetime
 import hashlib
 import os
 import re
+import shlex
 import shutil
+import signal
 import subprocess
 import tempfile
 from dataclasses import dataclass, field
@@ -19,7 +21,11 @@ from pathlib import Path, PurePosixPath
 from typing import Callable, Optional
 
 from ConfigMerge import ApplySet, MergeConfig, MergeResult
-from Core import BackupsDir, ChildEnvironment, DownloadsDir, LoadConfig, PristineDir
+import Services
+from Core import (
+    AutostartDir, BackupsDir, ChildEnvironment, DownloadsDir, HasSystemd, Home, IsLinux, IsMac, IsWindows, LoadConfig,
+    PristineDir, StartMenuDir, StartupDir,
+)
 from Manifests import Leftover, Program, Render
 from Receipts import IniRecord, LoadReceipt, PlacedFile, Receipt
 from Sources import ClearDownloads, Download, LatestCommit, SourceError
@@ -41,9 +47,18 @@ def _Now() -> str:
 def _Run(Command: list[str], Log: LogFn, Check: bool = True, Cwd: Optional[Path] = None) -> int:
     """Run a command, streaming its output into the log."""
     Log(f"$ {' '.join(Command)}")
-    Process = subprocess.Popen(
-        Command, cwd=Cwd, stdout=subprocess.PIPE, stderr=subprocess.STDOUT, text=True, env=ChildEnvironment(),
-    )
+    try:
+        Process = subprocess.Popen(
+            Command, cwd=Cwd, stdout=subprocess.PIPE, stderr=subprocess.STDOUT, text=True, env=ChildEnvironment(),
+            encoding="utf-8", errors="replace",
+            creationflags=getattr(subprocess, "CREATE_NO_WINDOW", 0),  # no console flashes on Windows
+        )
+    except FileNotFoundError:
+        # Not installed here (e.g. update-desktop-database without desktop-file-utils).
+        if Check:
+            raise InstallError(f"{Command[0]} isn't installed")
+        Log(f"  (skipped: {Command[0]} isn't installed)")
+        return 127
     for Line in Process.stdout:
         Log(f"  {Line.rstrip()}")
     Code = Process.wait()
@@ -53,6 +68,8 @@ def _Run(Command: list[str], Log: LogFn, Check: bool = True, Cwd: Optional[Path]
 
 
 def _Systemctl(Log: LogFn, *Args: str, Check: bool = False) -> int:
+    if not HasSystemd:
+        return 0  # services run through Services.py instead
     return _Run(["systemctl", "--user", *Args], Log, Check=Check)
 
 
@@ -60,7 +77,12 @@ def _RemovePath(Target: Path) -> None:
     if Target.is_symlink() or Target.is_file():
         Target.unlink()
     elif Target.is_dir():
-        shutil.rmtree(Target)
+        def ClearReadOnly(Function, FailedPath, _Error):
+            # Windows refuses to delete read-only files (e.g. in .git folders).
+            os.chmod(FailedPath, 0o700)
+            Function(FailedPath)
+
+        shutil.rmtree(Target, onexc=ClearReadOnly)
 
 
 def _BackupName(Target: str) -> str:
@@ -68,18 +90,71 @@ def _BackupName(Target: str) -> str:
     return Target.strip("/").replace("/", "__")
 
 
+def _CopyPath(Source: Path, Destination: Path) -> None:
+    """A file, or a folder (a macOS .app bundle) with everything in it."""
+    _RemovePath(Destination)
+    if Source.is_dir() and not Source.is_symlink():
+        shutil.copytree(Source, Destination, symlinks=True)
+    else:
+        shutil.copy2(Source, Destination)
+
+
+def _Displace(Program: Program, Target: Path, Kind: str, OldReceipt: Optional["Receipt"]) -> PlacedFile:
+    """The receipt entry for a file SaraSuite is about to place. One that's
+    already there but wasn't placed by SaraSuite (e.g. a hand-made desktop
+    entry from development) is moved aside, not lost: it comes back when the
+    program is removed."""
+    Previous = OldReceipt.FindFile(str(Target)) if OldReceipt is not None else None
+    Placed = PlacedFile(str(Target), Kind, Displaced=Previous.Displaced if Previous else "")
+    if Previous is None and (Target.exists() or Target.is_symlink()):
+        Displaced = BackupsDir / Program.Name / "Displaced" / _BackupName(str(Target))
+        Displaced.parent.mkdir(parents=True, exist_ok=True)
+        _CopyPath(Target, Displaced)
+        Placed.Displaced = str(Displaced)
+    return Placed
+
+
+def _Pkexec(Command: list[str], Log: LogFn, Check: bool = True) -> int:
+    """Run Command as root through pkexec, saying what went wrong in words."""
+    if shutil.which("pkexec") is None:
+        Code = 127
+    else:
+        Code = _Run(["pkexec", *Command], Log, Check=False)
+    if Code == 0:
+        return 0
+    if Code == 126:
+        Problem = "the password prompt was cancelled"
+    elif shutil.which("pkexec") is None:
+        Problem = "pkexec (polkit) isn't installed"
+    else:
+        Problem = ("no password prompt could be shown: polkit needs an authentication agent running "
+                   "in your session (e.g. polkit-gnome or lxqt-policykit), which window managers don't start themselves")
+    Message = f"Couldn't do this as root ({Problem}). The command was: sudo {' '.join(Command)}"
+    if Check:
+        raise InstallError(Message)
+    Log(f"Warning: {Message}")
+    return Code
+
+
+def _NeedsRoot(Template, Target: str) -> bool:
+    if Template.Root == "Auto":
+        return not (Target == str(Home) or Target.startswith(f"{Home}{os.sep}"))
+    return bool(Template.Root)
+
+
 def _WriteRoot(Target: str, Text: str, Log: LogFn) -> None:
     with tempfile.NamedTemporaryFile("w", delete=False, suffix=".sarasuite") as Temporary:
         Temporary.write(Text)
     os.chmod(Temporary.name, 0o644)
     try:
-        _Run(["pkexec", "install", "-D", "-m", "644", Temporary.name, Target], Log)
+        _Pkexec(["install", "-D", "-m", "644", Temporary.name, Target], Log)
     finally:
         os.unlink(Temporary.name)
 
 
 def _RemoveRoot(Target: str, Log: LogFn) -> None:
-    _Run(["pkexec", "rm", "-f", Target], Log)
+    # A leftover outside $HOME isn't worth failing an install or removal over.
+    _Pkexec(["rm", "-f", Target], Log, Check=False)
 
 
 def _ReadIni(FilePath: Path) -> configparser.ConfigParser:
@@ -291,23 +366,37 @@ def _RequirementsText(Program: Program) -> str:
     return "\n".join(Program.Requirements)
 
 
+def _SystemPython(Program: Program, Log: LogFn) -> str:
+    if IsLinux:
+        Python = shutil.which("python3")
+        if Python is None:
+            raise InstallError(f"{Program.Name} needs python3, and it isn't installed (sudo dnf install python3)")
+        return Python
+    if IsMac:
+        import MacSupport as Support
+    else:
+        import WindowsSupport as Support
+
+    Python = Support.FindPython() or Support.InstallPython(Log)
+    if Python is None:
+        raise InstallError(f"{Program.Name} needs Python, and it couldn't be installed. Get it from https://www.python.org/downloads/")
+    return Python
+
+
 def _SetUpVenv(Program: Program, OldHash: str, Log: LogFn) -> str:
     """(Re)install requirements only when they changed. Returns the new hash."""
     if not Program.UsesPython:
         return ""
     Venv = Program.ProgramDir / ".venv"
     NewHash = hashlib.sha256(_RequirementsText(Program).encode()).hexdigest()
-    if (Venv / "bin" / "python").exists() and NewHash == OldHash:
+    if Program.Python.exists() and NewHash == OldHash:
         Log("Python requirements unchanged, skipping pip")
         return NewHash
-    if not (Venv / "bin" / "python").exists():
-        # Always the system python: inside the AppImage sys.executable is the
-        # AppImage itself, and the venv has to outlive SaraSuite anyway.
-        Python = shutil.which("python3")
-        if Python is None:
-            raise InstallError(f"{Program.Name} needs python3, and it isn't installed (sudo dnf install python3)")
-        _Run([Python, "-m", "venv", str(Venv)], Log)
-    Pip = [str(Venv / "bin" / "python"), "-m", "pip", "install", "--disable-pip-version-check"]
+    if not Program.Python.exists():
+        # Always the system python: inside the AppImage/.exe sys.executable is
+        # SaraSuite itself, and the venv has to outlive SaraSuite anyway.
+        _Run([_SystemPython(Program, Log), "-m", "venv", str(Venv)], Log)
+    Pip = [str(Program.Python), "-m", "pip", "install", "--disable-pip-version-check"]
     if Program.RequirementsFile:
         _Run([*Pip, "-r", str(Program.AppDir / Program.RequirementsFile)], Log)
     else:
@@ -319,13 +408,13 @@ def _PutBackDisplaced(Placed: PlacedFile, Log: LogFn) -> None:
     if not Placed.Displaced or not Path(Placed.Displaced).exists():
         return
     Current = Path(Placed.Path)
-    if Current.exists() and Current.read_bytes() == Path(Placed.Displaced).read_bytes():
+    if Current.is_file() and Current.read_bytes() == Path(Placed.Displaced).read_bytes():
         pass  # already identical (typical for a root file that was never removed)
     elif Placed.Root:
         _WriteRoot(Placed.Path, Path(Placed.Displaced).read_text(), Log)
     else:
-        shutil.copy2(Placed.Displaced, Placed.Path)
-    Path(Placed.Displaced).unlink()
+        _CopyPath(Path(Placed.Displaced), Current)
+    _RemovePath(Path(Placed.Displaced))
     Log(f"Restored your previous {Placed.Path}")
 
 
@@ -337,7 +426,7 @@ def _RemovePlacedTemplate(Placed: PlacedFile, Log: LogFn) -> None:
             _RemoveRoot(Placed.Path, Log)
             Log(f"Removed {Placed.Path}")
     else:
-        Path(Placed.Path).unlink(missing_ok=True)
+        _RemovePath(Path(Placed.Path))  # a folder for a macOS app bundle
         Log(f"Removed {Placed.Path}")
     _PutBackDisplaced(Placed, Log)
 
@@ -356,20 +445,13 @@ def _ApplyTemplates(Program: Program, Context: dict, OldReceipt: Optional[Receip
     for Template in Wanted:
         Target = Render(Template.Target, Context)
         Text = Render((Program.Folder / "Templates" / Template.Source).read_text(), Context)
-        Previous = OldReceipt.FindFile(Target) if OldReceipt is not None else None
-        Placed = PlacedFile(Target, "Template", Root=Template.Root, Displaced=Previous.Displaced if Previous else "")
-
-        # A file that's already there but wasn't placed by SaraSuite (e.g. a
-        # hand-made desktop entry from development) is moved aside, not lost.
-        if Previous is None and Path(Target).exists():
-            Displaced = BackupsDir / Program.Name / "Displaced" / _BackupName(Target)
-            Displaced.parent.mkdir(parents=True, exist_ok=True)
-            shutil.copy2(Target, Displaced)
-            Placed.Displaced = str(Displaced)
+        Placed = _Displace(Program, Path(Target), "Template", OldReceipt)
+        Placed.Root = Root = _NeedsRoot(Template, Target)
+        if Placed.Displaced and (OldReceipt is None or OldReceipt.FindFile(Target) is None):
             Log(f"Moved your existing {Target} aside (it comes back if {Program.Name} is removed)")
 
         NewReceipt.Files.append(Placed)
-        if Template.Root:
+        if Root:
             if Path(Target).exists() and Path(Target).read_text() == Text:
                 continue
             _WriteRoot(Target, Text, Log)
@@ -381,6 +463,16 @@ def _ApplyTemplates(Program: Program, Context: dict, OldReceipt: Optional[Receip
         Log(f"Wrote {Target}")
 
 
+def _RemoveStaleShortcuts(OldReceipt: Optional[Receipt], NewReceipt: Receipt, Log: LogFn) -> None:
+    """Shortcuts the old install made that this one no longer wants (an
+    option was unticked, a service disabled, or the manifest dropped it)."""
+    if OldReceipt is None:
+        return
+    for Placed in OldReceipt.Files:
+        if Placed.Kind == "Shortcut" and NewReceipt.FindFile(Placed.Path) is None:
+            _RemovePlacedTemplate(Placed, Log)
+
+
 def _RevertIni(Record: IniRecord, Log: LogFn) -> None:
     FilePath = Path(Record.File)
     Parser = _ReadIni(FilePath)
@@ -434,14 +526,138 @@ def _ApplyIniEdits(Program: Program, Context: dict, OldReceipt: Optional[Receipt
         Log(f"Set {Key}={Value} in {File}")
 
 
-def _ApplyServices(Program: Program, OldReceipt: Optional[Receipt], NewReceipt: Receipt, Log: LogFn) -> None:
+def _PlaceShortcut(Program: Program, Link: Path, Arguments: str, WorkingDir: Path, IconPng: Optional[Path],
+                   Description: str, OldReceipt: Optional[Receipt], NewReceipt: Receipt, Log: LogFn) -> None:
+    """Windows: a .lnk running the program's pythonw.exe (in UTF-8 mode, which
+    every Sara program assumes) with Arguments. A link that was already there
+    and isn't ours is moved aside like a template, and comes back on removal."""
+    import WindowsSupport
+
+    Placed = _Displace(Program, Link, "Shortcut", OldReceipt)
+    Icon = WindowsSupport.MakeIcon(IconPng, Program.ProgramDir / f"{Link.stem}.ico") if IconPng and IconPng.is_file() else None
+    WindowsSupport.CreateShortcut(Link, Program.PythonW, f"-X utf8 {Arguments}", WorkingDir, Icon, Description)
+    NewReceipt.Files.append(Placed)
+    Log(f"Wrote {Link}")
+
+
+def _PlaceAppBundle(Program: Program, Link, Context: dict, OldReceipt: Optional[Receipt], NewReceipt: Receipt,
+                    Log: LogFn) -> None:
+    """macOS: ~/Applications/<Name>.app, running Script with the program's
+    Python from the app folder (MacSupport.CreateAppBundle)."""
+    import MacSupport
+
+    Bundle = MacSupport.ApplicationsDir / f"{Link.Name}.app"
+    Placed = _Displace(Program, Bundle, "Shortcut", OldReceipt)
+    Command = [str(Program.Python), str(Program.AppDir / Link.Script), *shlex.split(Render(Link.Arguments, Context))]
+    MacSupport.CreateAppBundle(
+        Bundle, Link.Name, f"srhtnin.{Link.Name}", Command, Program.AppDir,
+        Program.AppDir / Link.Icon if Link.Icon else None, Link.Description or Program.Description,
+    )
+    NewReceipt.Files.append(Placed)
+    Log(f"Wrote {Bundle}")
+
+
+def _ApplyShortcuts(Program: Program, Context: dict, OldReceipt: Optional[Receipt], NewReceipt: Receipt, Log: LogFn) -> None:
+    """Start Menu shortcuts (Windows) and app bundles (macOS), from
+    [[Shortcuts]]; the ones starting services at login are placed by
+    _ApplyServices."""
+    if IsLinux:
+        return
+    for Link in Program.Shortcuts:
+        if not Program.OptionEnabled(Link.Option, NewReceipt.Options):
+            continue
+        if IsMac:
+            _PlaceAppBundle(Program, Link, Context, OldReceipt, NewReceipt, Log)
+            continue
+        Script = Program.AppDir / Link.Script
+        Arguments = f'"{Script}" {Render(Link.Arguments, Context)}'.strip()
+        _PlaceShortcut(
+            Program, StartMenuDir / f"{Link.Name}.lnk", Arguments, Program.AppDir,
+            Program.AppDir / Link.Icon if Link.Icon else None, Link.Description or Program.Description,
+            OldReceipt, NewReceipt, Log,
+        )
+
+
+def _PlaceAutostart(Program: Program, Service, Command: tuple, OldReceipt: Optional[Receipt],
+                    NewReceipt: Receipt, Log: LogFn) -> None:
+    """Linux without systemd: the XDG autostart entry that starts a service at
+    login. Recorded like a shortcut, so it goes when the service is turned off
+    or the program removed (and one that was already there comes back)."""
+    Entry = AutostartDir / f"{Service.Name}.desktop"
+    Placed = _Displace(Program, Entry, "Shortcut", OldReceipt)
+    Entry.parent.mkdir(parents=True, exist_ok=True)
+    Entry.write_text(Services.AutostartEntry(Service.Name, *Command))
+    NewReceipt.Files.append(Placed)
+    Log(f"Wrote {Entry}")
+
+
+def _PlaceLaunchAgent(Program: Program, Service, Command: tuple, OldReceipt: Optional[Receipt],
+                      NewReceipt: Receipt, Log: LogFn) -> None:
+    """macOS: the LaunchAgent that starts a service at login, recorded like
+    the autostart entry above."""
+    import MacSupport
+
+    Agent = MacSupport.LaunchAgentPath(Service.Name)
+    Placed = _Displace(Program, Agent, "Shortcut", OldReceipt)
+    Python, Runner, Script, WorkingDir = Command
+    Agent.parent.mkdir(parents=True, exist_ok=True)
+    MacSupport.LogsDir.mkdir(parents=True, exist_ok=True)
+    Agent.write_bytes(MacSupport.LaunchAgent(
+        Service.Name, Services.Command(Python, Runner, Service.Name, Script, WorkingDir), WorkingDir,
+    ))
+    NewReceipt.Files.append(Placed)
+    Log(f"Wrote {Agent}")
+
+
+def _ApplyStandInServices(Program: Program, Context: dict, OldReceipt: Optional[Receipt], NewReceipt: Receipt, Log: LogFn) -> None:
+    """Services SaraSuite runs itself (Windows; macOS; Linux without systemd):
+    at login from a Startup-folder shortcut / a LaunchAgent / an autostart entry, through
+    ServiceRun.py; enabling also starts it now. An update restarts it, so
+    it runs the new code."""
+    WasEnabled = set(OldReceipt.EnabledServices) if OldReceipt else set()
+    Runner = Program.ProgramDir / "ServiceRun.py"
+    for Service in Program.Services:
+        Script = Program.AppDir / Service.Script
+        WorkingDir = Path(Render(Service.WorkingDir, Context)) if Service.WorkingDir else Program.AppDir
+        if Program.OptionEnabled(Service.Option, NewReceipt.Options):
+            NewReceipt.EnabledServices.append(Service.Id)
+            if IsWindows:
+                _PlaceShortcut(
+                    Program, StartupDir / f"{Service.Name}.lnk", f'"{Runner}" {Service.Name} "{Script}" "{WorkingDir}"',
+                    WorkingDir, None, f"{Service.Name} (background service)", OldReceipt, NewReceipt, Log,
+                )
+            elif IsMac:
+                _PlaceLaunchAgent(Program, Service, (Program.Python, Runner, Script, WorkingDir), OldReceipt, NewReceipt, Log)
+            else:
+                _PlaceAutostart(Program, Service, (Program.Python, Runner, Script, WorkingDir), OldReceipt, NewReceipt, Log)
+            if Service.Id in WasEnabled and not IsWindows:  # Windows stopped it before the update
+                Services.Restart(Service.Name, Program.PythonW, Runner, Script, WorkingDir, Log)
+            else:
+                Services.Start(Service.Name, Program.PythonW, Runner, Script, WorkingDir, Log)
+        elif Service.Id in WasEnabled:
+            Services.Stop(Service.Name, Log)
+
+
+def _StopWindowsServices(Program: Program, Receipt: Optional[Receipt], Log: LogFn) -> None:
+    """Windows locks a running program's files, so its services stop before
+    its files or venv are replaced or removed."""
+    if not IsWindows or Receipt is None:
+        return
+    for Name in Receipt.EnabledServices:
+        Services.Stop(Name, Log)
+
+
+def _ApplyServices(Program: Program, OldReceipt: Optional[Receipt], NewReceipt: Receipt, Log: LogFn, Context: Optional[dict] = None) -> None:
     if not Program.Services and not (OldReceipt and OldReceipt.EnabledServices):
         return
+    if IsWindows or not HasSystemd:
+        _ApplyStandInServices(Program, Context or Program.Context(NewReceipt.Answers), OldReceipt, NewReceipt, Log)
+        return
     _Systemctl(Log, "daemon-reload")
     WasEnabled = set(OldReceipt.EnabledServices) if OldReceipt else set()
     for Service in Program.Services:
         if Program.OptionEnabled(Service.Option, NewReceipt.Options):
-            NewReceipt.EnabledServices.append(Service.Unit)
+            NewReceipt.EnabledServices.append(Service.Id)
             if Service.Unit in WasEnabled:
                 _Systemctl(Log, "try-restart", Service.Unit)
             else:
@@ -450,12 +666,33 @@ def _ApplyServices(Program: Program, OldReceipt: Optional[Receipt], NewReceipt:
             _Systemctl(Log, "disable", "--now", Service.Unit)
 
 
+def _StopProcesses(Name: str, Log: LogFn) -> None:
+    """Linux: stop your own processes called Name (like pkill -x -u $USER,
+    which not every system has)."""
+    Stopped = 0
+    for Entry in Path("/proc").iterdir():
+        try:
+            if Entry.name.isdigit() and Entry.stat().st_uid == os.getuid() and (Entry / "comm").read_text().strip() == Name[:15]:
+                os.kill(int(Entry.name), signal.SIGTERM)
+                Stopped += 1
+        except (OSError, ValueError):
+            continue
+    Log(f"Stopped {Name} ({Stopped} running) so it starts again with the change" if Stopped else f"{Name} wasn't running")
+
+
 def _AfterIntegrationChanges(Program: Program, Log: LogFn) -> None:
+    if not IsLinux:
+        return  # Start Menu shortcuts and app bundles need no refresh
     Applications = Path(Program.Context()["ApplicationsDir"])
     if any(Template.Target.endswith(".desktop") for Template in Program.Templates) and Applications.exists():
         _Run(["update-desktop-database", str(Applications)], Log, Check=False)
     for Unit in Program.RestartUnits:
-        _Systemctl(Log, "try-restart", Unit)
+        if HasSystemd:
+            _Systemctl(Log, "try-restart", Unit)
+        else:
+            # No systemd to restart it: stop it, and D-Bus starts it again
+            # when it's next needed (xdg-desktop-portal is D-Bus activated).
+            _StopProcesses(Unit.removesuffix(".service"), Log)
 
 
 def Apply(
@@ -508,9 +745,11 @@ def Apply(
 
     try:
         Program.ProgramDir.mkdir(parents=True, exist_ok=True)
+        _StopWindowsServices(Program, OldReceipt, Log)
         _CopyProgramFiles(Program, SourceDir, Log)
         NewReceipt.RequirementsHash = _SetUpVenv(Program, OldReceipt.RequirementsHash if OldReceipt else "", Log)
         _ApplyTemplates(Program, Context, OldReceipt, NewReceipt, Log)
+        _ApplyShortcuts(Program, Context, OldReceipt, NewReceipt, Log)
         _ApplyConfigs(Program, ConfigPlans, NewReceipt, Log)
         # .new files from an earlier update that are still around stay tracked.
         if OldReceipt is not None:
@@ -518,7 +757,8 @@ def Apply(
                 if Placed.Kind == "ConfigNew" and Path(Placed.Path).exists() and NewReceipt.FindFile(Placed.Path) is None:
                     NewReceipt.Files.append(Placed)
         _ApplyIniEdits(Program, Context, OldReceipt, NewReceipt, Log)
-        _ApplyServices(Program, OldReceipt, NewReceipt, Log)
+        _ApplyServices(Program, OldReceipt, NewReceipt, Log, Context)
+        _RemoveStaleShortcuts(OldReceipt, NewReceipt, Log)
         _AfterIntegrationChanges(Program, Log)
         NewReceipt.Complete = True
         ClearDownloads(Program.Name)
@@ -581,10 +821,14 @@ def PlanRemoval(Program: Program) -> RemovalPlan:
         Plan.Items.append(RemovalItem(str(Downloaded), "Program", "downloaded source"))
 
     if Current is not None:
+        ServiceNote = ("background service, stopped and taken out of Startup" if IsWindows
+                       else "background service, stopped and its LaunchAgent removed" if IsMac
+                       else "systemd user service, stopped and disabled" if HasSystemd
+                       else "background service, stopped and taken out of autostart")
         for Unit in Current.EnabledServices:
-            Plan.Items.append(RemovalItem(Unit, "Integration", "systemd user service, stopped and disabled"))
+            Plan.Items.append(RemovalItem(Unit, "Integration", ServiceNote))
         for Placed in Current.Files:
-            if Placed.Kind == "Template":
+            if Placed.Kind in ("Template", "Shortcut"):
                 Note = "put back to your previous version" if Placed.Displaced else ""
                 if Placed.Root:
                     Note = ", ".join(Part for Part in ("needs your password", Note) if Part)
@@ -625,14 +869,20 @@ def Remove(Program: Program, RemoveConfigs: bool, RemoveRuntime: bool, Log: LogF
     Current = LoadReceipt(Program.Name)
 
     if Current is not None:
-        for Unit in Current.EnabledServices:
-            _Systemctl(Log, "disable", "--now", Unit)
+        if IsWindows:
+            _StopWindowsServices(Program, Current, Log)
+        elif not HasSystemd:
+            for Name in Current.EnabledServices:
+                Services.Stop(Name, Log)
+        else:
+            for Unit in Current.EnabledServices:
+                _Systemctl(Log, "disable", "--now", Unit)
         for Placed in Current.Files:
-            if Placed.Kind == "Template":
+            if Placed.Kind in ("Template", "Shortcut"):
                 _RemovePlacedTemplate(Placed, Log)
         for Record in Current.IniEdits:
             _RevertIni(Record, Log)
-        if Current.EnabledServices or any("/systemd/" in Placed.Path for Placed in Current.Files):
+        if HasSystemd and (Current.EnabledServices or any("/systemd/" in Placed.Path for Placed in Current.Files)):
             _Systemctl(Log, "daemon-reload")
 
     Groups = {"Program"}

MacSupport.py

@@ -0,0 +1,257 @@
+"""macOS stand-ins for what SaraSuite uses on Linux:
+
+    Linux                               macOS
+    .desktop entry                      a small app bundle in ~/Applications (<Name>.app)
+    systemd --user service              a LaunchAgent (~/Library/LaunchAgents) that starts it
+                                        at login, through Programs/ServiceRun.py (Services.py)
+    system python3                      a standalone Python installed by uv into SaraSuite's
+                                        own folder (no admin, no Homebrew, no Xcode tools)
+    fc-list                             the font files' own names
+    xdg-open                            open
+
+Only used on macOS, but nothing in here needs macOS to import.
+"""
+
+import plistlib
+import shlex
+import shutil
+import subprocess
+import tarfile
+import tempfile
+import urllib.request
+from pathlib import Path
+from typing import Callable, Optional
+
+from Core import CacheHome, ChildEnvironment, DataDir, Home
+
+LogFn = Callable[[str], None]
+
+PythonVersion = "3.14"  # what uv installs
+# Apple Silicon only. uv's own release file, and so the Python it installs.
+UvTarget = "aarch64-apple-darwin"
+UvUrl = f"https://github.com/astral-sh/uv/releases/latest/download/uv-{UvTarget}.tar.gz"
+ToolsDir = DataDir / "Tools"  # uv itself
+PythonsDir = DataDir / "Python"  # the Pythons it installs (program venvs are built from these)
+
+ApplicationsDir = Home / "Applications"
+LaunchAgentsDir = Home / "Library" / "LaunchAgents"
+LogsDir = Home / "Library" / "Logs"
+
+
+# --- Python -------------------------------------------------------------------------------
+
+
+def _UvEnvironment() -> dict[str, str]:
+    Environment = ChildEnvironment()
+    Environment.update(
+        UV_PYTHON_INSTALL_DIR=str(PythonsDir),
+        UV_PYTHON_PREFERENCE="only-managed",  # never the Xcode or Homebrew one
+        UV_CACHE_DIR=str(CacheHome / "SaraSuite" / "uv"),
+        UV_NO_MODIFY_PATH="1",
+    )
+    return Environment
+
+
+def _Uv() -> Path:
+    return ToolsDir / "uv"
+
+
+def FindPython() -> Optional[str]:
+    """The Python uv installed for SaraSuite earlier, if any."""
+    if not _Uv().is_file():
+        return None
+    try:
+        Result = subprocess.run(
+            [str(_Uv()), "python", "find", PythonVersion], capture_output=True, text=True, timeout=60,
+            env=_UvEnvironment(),
+        )
+    except (OSError, subprocess.SubprocessError):
+        return None
+    Found = Result.stdout.strip()
+    return Found if Result.returncode == 0 and Found and Path(Found).is_file() else None
+
+
+def _Stream(Command: list[str], Log: LogFn) -> int:
+    Log(f"$ {' '.join(Command)}")
+    Process = subprocess.Popen(Command, stdout=subprocess.PIPE, stderr=subprocess.STDOUT, text=True,
+                               errors="replace", env=_UvEnvironment())
+    for Line in Process.stdout:
+        if Line.strip():
+            Log(f"  {Line.rstrip()}")
+    return Process.wait()
+
+
+def _InstallUv(Log: LogFn) -> bool:
+    Log(f"Downloading uv ({UvUrl})")
+    try:
+        with urllib.request.urlopen(UvUrl, timeout=120) as Response, tempfile.TemporaryDirectory() as Temporary:
+            Archive = Path(Temporary) / "uv.tar.gz"
+            Archive.write_bytes(Response.read())
+            with tarfile.open(Archive) as Tar:
+                Member = next((Item for Item in Tar.getmembers() if Item.isfile() and Path(Item.name).name == "uv"), None)
+                if Member is None:
+                    Log("The uv download has no uv in it.")
+                    return False
+                Tar.extract(Member, Temporary, filter="data")
+                ToolsDir.mkdir(parents=True, exist_ok=True)
+                shutil.move(Path(Temporary) / Member.name, _Uv())
+        _Uv().chmod(0o755)
+        return True
+    except (OSError, tarfile.TarError) as Error:
+        Log(f"Couldn't download uv: {Error}")
+        return False
+
+
+def InstallPython(Log: LogFn) -> Optional[str]:
+    """Download uv, and with it a standalone Python, into SaraSuite's own
+    folder. Nothing is installed system-wide and no password is asked."""
+    Log(f"Python not found; installing Python {PythonVersion} with uv (just for SaraSuite, no admin)")
+    if not _Uv().is_file() and not _InstallUv(Log):
+        return None
+    # --no-bin: no python3.14 command in ~/.local/bin; only SaraSuite uses this one.
+    if _Stream([str(_Uv()), "python", "install", "--no-bin", PythonVersion], Log) != 0:
+        return None
+    return FindPython()
+
+
+# --- App bundles and icons -------------------------------------------------------------------
+
+
+def MakeIcns(Png: Path, Icns: Path) -> Optional[Path]:
+    """An .icns from one of the Sara icons (32x32 pixel art stored at 10x),
+    each size a whole multiple of the 32x32 grid (nearest-neighbour), so
+    the art stays crisp. Needs Pillow; None without it."""
+    try:
+        from PIL import Image
+
+        Grid = Image.open(Png).convert("RGBA").resize((32, 32), Image.NEAREST)
+        Sizes = [Grid.resize((Size, Size), Image.NEAREST) for Size in (16, 32, 64, 128, 256, 512, 1024)]
+        Icns.parent.mkdir(parents=True, exist_ok=True)
+        Sizes[-1].save(Icns, format="ICNS", append_images=Sizes[:-1])
+        return Icns
+    except Exception:
+        return None
+
+
+def CreateAppBundle(
+    Bundle: Path, Name: str, Identifier: str, Command: list[str], WorkingDir: Path,
+    IconPng: Optional[Path] = None, Description: str = "",
+) -> None:
+    """~/Applications/<Name>.app: Launchpad, Spotlight and the Finder list it
+    like any app. Its executable is a shell script that runs Command from
+    WorkingDir. Written fresh each time (the old bundle is replaced)."""
+    if Bundle.exists():
+        shutil.rmtree(Bundle)
+    Contents = Bundle / "Contents"
+    (Contents / "MacOS").mkdir(parents=True)
+    (Contents / "Resources").mkdir()
+    Executable = Contents / "MacOS" / Name
+    Executable.write_text(
+        "#!/bin/sh\n"
+        "# Written by SaraSuite; replaced on every update.\n"
+        f"cd {shlex.quote(str(WorkingDir))} || exit 1\n"
+        f'exec {" ".join(shlex.quote(Part) for Part in Command)} "$@"\n'
+    )
+    Executable.chmod(0o755)
+    Info = {
+        "CFBundleName": Name,
+        "CFBundleDisplayName": Name,
+        "CFBundleIdentifier": Identifier,
+        "CFBundleExecutable": Name,
+        "CFBundlePackageType": "APPL",
+        "CFBundleInfoDictionaryVersion": "6.0",
+        "CFBundleShortVersionString": "1.0",
+        "LSMinimumSystemVersion": "11.0",
+        "NSHighResolutionCapable": True,
+        "NSHumanReadableCopyright": Description,
+    }
+    if IconPng is not None and MakeIcns(IconPng, Contents / "Resources" / f"{Name}.icns") is not None:
+        Info["CFBundleIconFile"] = f"{Name}.icns"
+    with (Contents / "Info.plist").open("wb") as File:
+        plistlib.dump(Info, File)
+    # The Finder and Launchpad cache bundles; tell them this one changed.
+    Register = Path("/System/Library/Frameworks/CoreServices.framework/Frameworks/"
+                    "LaunchServices.framework/Support/lsregister")
+    if Register.is_file():
+        subprocess.run([str(Register), "-f", str(Bundle)], capture_output=True, timeout=30)
+
+
+# --- Services ----------------------------------------------------------------------------------
+
+
+def LaunchAgentPath(Name: str) -> Path:
+    return LaunchAgentsDir / f"srhtnin.{Name}.plist"
+
+
+def LaunchAgent(Name: str, Command: list[str], WorkingDir: Path) -> bytes:
+    """The LaunchAgent that starts a service at login (macOS's equivalent of
+    the Startup folder / an XDG autostart entry). Only that: ServiceRun.py
+    keeps it running and logs it, like on the other systems, so SaraSuite
+    and SaraSort can start and stop it the same way everywhere."""
+    return plistlib.dumps({
+        "Label": f"srhtnin.{Name}",
+        "ProgramArguments": Command,
+        "WorkingDirectory": str(WorkingDir),
+        "RunAtLoad": True,
+        "ProcessType": "Background",
+        # Only what fails before ServiceRun.py has its own log (e.g. a missing venv).
+        "StandardErrorPath": str(LogsDir / f"{Name}.launchd.log"),
+    })
+
+
+# --- Fonts and files ----------------------------------------------------------------------------
+
+
+def _FontFamilies(FilePath: Path) -> set[str]:
+    """Family names in one font file's name table (every font of a .ttc).
+    The typographic family (name ID 16) where there is one, else ID 1."""
+    import struct
+
+    Families: set[str] = set()
+    try:
+        Data = FilePath.read_bytes()
+    except OSError:
+        return Families
+    Offsets = [0]
+    if Data[:4] == b"ttcf":
+        Count = struct.unpack_from(">I", Data, 8)[0]
+        Offsets = list(struct.unpack_from(f">{Count}I", Data, 12))
+    for Offset in Offsets:
+        try:
+            for Index in range(struct.unpack_from(">H", Data, Offset + 4)[0]):
+                Tag, _Sum, Start, _Length = struct.unpack_from(">4sIII", Data, Offset + 12 + Index * 16)
+                if Tag != b"name":
+                    continue
+                _Format, Count, Strings = struct.unpack_from(">HHH", Data, Start)
+                Found: dict[int, str] = {}
+                for Record in range(Count):
+                    PlatformId, _Encoding, Language, NameId, Length, At = struct.unpack_from(
+                        ">6H", Data, Start + 6 + Record * 12)
+                    if NameId not in (1, 16) or NameId in Found:
+                        continue
+                    Raw = Data[Start + Strings + At:Start + Strings + At + Length]
+                    if PlatformId in (0, 3):
+                        Found[NameId] = Raw.decode("utf-16-be", "replace")
+                    elif PlatformId == 1 and Language == 0:
+                        Found[NameId] = Raw.decode("mac-roman", "replace")
+                Name = (Found.get(16) or Found.get(1) or "").strip()
+                if Name and not Name.startswith("."):  # ".SF NS" and co. are system-internal
+                    Families.add(Name)
+        except struct.error:
+            continue
+    return Families
+
+
+def FontFamilies() -> set[str]:
+    """Installed font families: the system's, the shared and your own Fonts folders."""
+    Families: set[str] = set()
+    for Folder in (Path("/System/Library/Fonts"), Path("/Library/Fonts"), Home / "Library" / "Fonts"):
+        if Folder.is_dir():
+            for FilePath in Folder.rglob("*"):
+                if FilePath.suffix.lower() in (".ttf", ".otf", ".ttc"):
+                    Families |= _FontFamilies(FilePath)
+    return Families
+
+
+def OpenPath(Target: Path) -> None:
+    subprocess.Popen(["open", str(Target)], env=ChildEnvironment(), start_new_session=True)

Main.py

@@ -6,6 +6,7 @@ import os
 import shutil
 import sys
 import traceback
+from pathlib import Path
 from typing import Callable
 
 import flet as ft
@@ -13,7 +14,7 @@ import flet as ft
 import SelfUpdate
 from Catalog import UpdateCatalog
 from Core import (
-    AppName, AppVersion, ApplyAppearance, AssetsDir, BuildTheme, BundledFontFamily, ChipButtonStyle, DataDir,
+    AppName, AppVersion, IsLinux, IsMac, IsWindows, StartMenuDir, ApplyAppearance, AssetsDir, BuildTheme, BundledFontFamily, ChipButtonStyle, DataDir,
     BundledManifestsDir, DataHome, EffectiveSettings, LoadConfig, Palette,
 )
 from Dialogs import ShowInstallDialog, ShowOptionsDialog, ShowRemoveDialog, ShowUpdateDialog
@@ -24,10 +25,35 @@ from Settings import ShowSettingsDialog
 
 _MaxLogLines = 2000
 
-# When running as an AppImage, SaraSuite can put itself in the app menu.
-_AppImage = os.environ.get("APPIMAGE", "")
-_MenuEntry = DataHome / "applications" / "SaraSuite.desktop"
-_MenuIcon = DataDir / "SaraSuite.png"
+# When running packaged (AppImage / .exe), SaraSuite can put itself in the
+# app menu: a desktop entry on Linux, a Start Menu shortcut on Windows. On
+# macOS SaraSuite.app already is an app wherever it's put (e.g. /Applications).
+_Packaged = SelfUpdate.RunningAppImage()
+_AppImage = str(_Packaged) if _Packaged else ""
+if IsWindows:
+    _MenuEntry = StartMenuDir / "SaraSuite.lnk"
+    _MenuIcon = DataDir / "SaraSuite.ico"
+else:
+    _MenuEntry = DataHome / "applications" / "SaraSuite.desktop"
+    _MenuIcon = DataDir / "SaraSuite.png"
+_MenuLabel = "Start menu" if IsWindows else "app menu"
+
+
+def _KeepFallbackLibraries() -> None:
+    """Linux AppImage: copy the bundled libsecret (and what it needs) to
+    ~/.local/share/SaraSuite/Libraries, for FletIdentity.py to give the Flet
+    client of every installed program on systems without it."""
+    Bundled = Path(getattr(sys, "_MEIPASS", "")) / "FallbackLibs"
+    if not IsLinux or not Bundled.is_dir():
+        return
+    Kept = DataDir / "Libraries"
+    try:
+        Kept.mkdir(parents=True, exist_ok=True)
+        for Library in Bundled.iterdir():
+            if not (Kept / Library.name).exists() or (Kept / Library.name).stat().st_size != Library.stat().st_size:
+                shutil.copy2(Library, Kept / Library.name)
+    except OSError:
+        pass  # only a fallback
 
 
 def _LoadFletIdentity():
@@ -44,6 +70,12 @@ def _SetMenuEntry(Enabled: bool) -> None:
         _MenuEntry.unlink(missing_ok=True)
         _MenuIcon.unlink(missing_ok=True)
         return
+    if IsWindows:
+        import WindowsSupport
+
+        Icon = WindowsSupport.MakeIcon(AssetsDir / "Icon.png", _MenuIcon)
+        WindowsSupport.CreateShortcut(_MenuEntry, Path(_AppImage), Icon=Icon, Description="Install, update and remove Sara programs")
+        return
     _MenuIcon.parent.mkdir(parents=True, exist_ok=True)
     shutil.copy(AssetsDir / "Icon.png", _MenuIcon)
     _MenuEntry.parent.mkdir(parents=True, exist_ok=True)
@@ -70,6 +102,13 @@ def Main(Page: ft.Page) -> None:
     Page.bgcolor = Palette.Base
     Page.window.width = 960
     Page.window.height = 720
+    if IsWindows:
+        # The taskbar/title bar icon (on Linux it comes from the desktop entry).
+        import WindowsSupport
+
+        Icon = WindowsSupport.MakeIcon(AssetsDir / "Icon.png", DataDir / "SaraSuite.ico")
+        if Icon is not None:
+            Page.window.icon = str(Icon)
 
     LogView = ft.ListView(expand=True, auto_scroll=True, spacing=0, padding=8)
 
@@ -242,13 +281,13 @@ def Main(Page: ft.Page) -> None:
 
     def ToggleMenuEntry(e) -> None:
         _SetMenuEntry(not _MenuEntry.exists())
-        MenuButton.content = "Remove from app menu" if _MenuEntry.exists() else "Add to app menu"
+        MenuButton.content = f"Remove from {_MenuLabel}" if _MenuEntry.exists() else f"Add to {_MenuLabel}"
         MenuButton.update()
 
     MenuButton = ft.OutlinedButton(
-        content="Remove from app menu" if _MenuEntry.exists() else "Add to app menu",
+        content=f"Remove from {_MenuLabel}" if _MenuEntry.exists() else f"Add to {_MenuLabel}",
         style=ChipButtonStyle(),
-        visible=bool(_AppImage),
+        visible=bool(_AppImage) and not IsMac,
         on_click=ToggleMenuEntry,
     )
 
@@ -303,12 +342,23 @@ def Main(Page: ft.Page) -> None:
 
 
 if __name__ == "__main__":
+    _KeepFallbackLibraries()  # also before a command (an install from the command line)
     if len(sys.argv) > 1:
+        if IsWindows and getattr(sys, "frozen", False):
+            # The .exe is built windowed (no console of its own); write the
+            # command-line mode's output to the console it was started from.
+            import ctypes
+
+            if ctypes.windll.kernel32.AttachConsole(-1):
+                sys.stdout = open("CONOUT$", "w", encoding="utf-8", buffering=1)
+                sys.stderr = sys.stdout
         from Cli import Run
 
         sys.exit(Run(sys.argv[1:]))
-    # A Flet client copy with the window app ID srhtnin.SaraSuite, so the
-    # desktop matches the window to SaraSuite.desktop (StartupWMClass) instead
-    # of showing it as "com.appveyor.flet". See Programs/FletIdentity.py.
-    os.environ.setdefault("FLET_VIEW_PATH", _LoadFletIdentity().ClientFor(f"srhtnin.{AppName}"))
+    SelfUpdate.CleanUpOldExe()
+    if IsLinux:
+        # A Flet client copy with the window app ID srhtnin.SaraSuite, so the
+        # desktop matches the window to SaraSuite.desktop (StartupWMClass) instead
+        # of showing it as "com.appveyor.flet". See Programs/FletIdentity.py.
+        os.environ.setdefault("FLET_VIEW_PATH", _LoadFletIdentity().ClientFor(f"srhtnin.{AppName}"))
     ft.run(Main, assets_dir=str(AssetsDir))

Manifests.py

@@ -1,5 +1,11 @@
 """Program manifests: Programs/<Name>/Manifest.toml, plus optional Templates/
-and Hooks.py next to it. See README.md for the full manifest format."""
+and Hooks.py next to it. See README.md for the full manifest format.
+
+A manifest's Platforms (default ["Linux"]) says where the program runs; each
+SaraSuite only lists the programs for its own system. Any list item can also
+carry Platform = "Linux", "Windows" or "macOS" to only apply there (e.g.
+desktop entries on Linux, Start Menu shortcuts on Windows, app bundles on
+macOS); others are dropped at load."""
 
 import importlib.util
 import re
@@ -11,8 +17,8 @@ from typing import Optional
 import tomlkit
 
 from Core import (
-    CacheHome, ConfigHome, CurrentDesktop, DataHome, Home, LoadConfig, ProgramsDir,
-    SharedConfigDir,
+    AutostartDir, CacheHome, ConfigHome, CurrentDesktop, DataHome, HasSystemd, Home, IsLinux, IsMac, IsWindows, LoadConfig,
+    Platform, ProgramsDir, SharedConfigDir, StartMenuDir, StartupDir, UserPortalsSupported,
 )
 
 # Never worth copying out of a source checkout, whatever Include says.
@@ -50,7 +56,9 @@ class TemplateFile:
     Source: str  # relative to the program's Templates/ folder
     Target: str
     Option: str = ""
-    Root: bool = False  # lives outside $HOME, written through pkexec
+    # True: lives outside $HOME, written through pkexec. "Auto": only when its
+    # Target turns out to be outside $HOME (e.g. {PortalsDir} on an old system).
+    Root: bool | str = False
     Executable: bool = False
 
 
@@ -78,8 +86,44 @@ class IniEdit:
 
 @dataclass
 class Service:
-    Unit: str  # a systemd --user unit, placed by a Template
+    """A background service. Linux with systemd: a --user Unit (placed by a
+    Template). Windows, macOS, and Linux without systemd (runit, OpenRC, ...):
+    Script (relative to the app folder) run by ServiceRun.py in WorkingDir,
+    at login through a Startup-folder shortcut / a LaunchAgent / an XDG
+    autostart entry (Services.py), so a Linux service gives both Unit and
+    Name/Script."""
+
+    Unit: str = ""
     Option: str = ""  # enabled + started only while this option is ticked
+    Name: str = ""  # run by SaraSuite: the service's name (PID file, log, autostart)
+    Script: str = ""
+    WorkingDir: str = ""
+
+    @property
+    def RunBySaraSuite(self) -> bool:
+        return IsWindows or not HasSystemd
+
+    @property
+    def Id(self) -> str:
+        """What the receipt records: the unit under systemd, else the name."""
+        return (self.Name or self.Unit) if self.RunBySaraSuite else (self.Unit or self.Name)
+
+
+@dataclass
+class Shortcut:
+    """A launcher in the system's app list running Script (relative to the
+    app folder) with the program's Python, from the app folder, with Icon (a
+    PNG in the app folder):
+    - Windows: a Start Menu shortcut (pythonw.exe; the icon becomes an .ico);
+    - macOS: an app bundle, ~/Applications/<Name>.app (the icon becomes an .icns).
+    Linux uses a desktop entry Template instead."""
+
+    Name: str
+    Script: str
+    Arguments: str = ""
+    Icon: str = ""
+    Description: str = ""
+    Option: str = ""
 
 
 @dataclass
@@ -119,6 +163,8 @@ class Program:
     Services: list[Service] = field(default_factory=list)
     RestartUnits: list[str] = field(default_factory=list)
     Leftovers: list[Leftover] = field(default_factory=list)
+    Shortcuts: list[Shortcut] = field(default_factory=list)
+    Platforms: list[str] = field(default_factory=lambda: ["Linux"])
     Hooks: Optional[ModuleType] = None
 
     @property
@@ -132,9 +178,13 @@ class Program:
     @property
     def IconPath(self) -> Optional[Path]:
         """The installed copy's own icon if it's there (always current; the
-        Icon= line of the program's desktop entry template says where), otherwise
-        the copy bundled next to the manifest (Programs/<Name>/Icon.png), so the
-        card has an icon before installing too."""
+        Icon= line of the program's desktop entry template, or its Windows
+        Shortcut's Icon, says where), otherwise the copy bundled next to the
+        manifest (Programs/<Name>/Icon.png), so the card has an icon before
+        installing too."""
+        for Link in self.Shortcuts:
+            if Link.Icon and (self.AppDir / Link.Icon).is_file():
+                return self.AppDir / Link.Icon
         for Template in self.Templates:
             if Template.Target.endswith(".desktop"):
                 for Line in (self.Folder / "Templates" / Template.Source).read_text().splitlines():
@@ -153,6 +203,16 @@ class Program:
     def GitUrl(self) -> str:
         return Render(self.Git, self.Context())
 
+    @property
+    def Python(self) -> Path:
+        Venv = self.ProgramDir / ".venv"
+        return Venv / "Scripts" / "python.exe" if IsWindows else Venv / "bin" / "python"
+
+    @property
+    def PythonW(self) -> Path:
+        """Windows: the venv's console-less python, for GUI programs and services."""
+        return self.Python.with_name("pythonw.exe") if IsWindows else self.Python
+
     @property
     def UsesPython(self) -> bool:
         return bool(self.Requirements or self.RequirementsFile)
@@ -170,16 +230,34 @@ class Program:
             "ConfigHome": str(ConfigHome),
             "DataHome": str(DataHome),
             "CacheHome": str(CacheHome),
-            "SystemdUserDir": str(ConfigHome / "systemd" / "user"),
-            "ApplicationsDir": str(DataHome / "applications"),
-            "DBusServicesDir": str(DataHome / "dbus-1" / "services"),
             "ProgramDir": str(self.ProgramDir),
             "AppDir": str(self.AppDir),
-            "Python": str(self.ProgramDir / ".venv" / "bin" / "python"),
+            "Python": str(self.Python),
+            "PythonW": str(self.PythonW),
             "ConfigDir": str(self.ConfigDir),
             "DesktopName": Desktop,
             "Desktop": Desktop.lower(),
         }
+        if IsWindows:
+            Context.update(StartMenuDir=str(StartMenuDir), StartupDir=str(StartupDir))
+        elif IsMac:
+            Context.update(ApplicationsDir=str(Home / "Applications"),
+                           LaunchAgentsDir=str(Home / "Library" / "LaunchAgents"))
+        else:
+            Context.update(
+                SystemdUserDir=str(ConfigHome / "systemd" / "user"),
+                AutostartDir=str(AutostartDir),
+                ApplicationsDir=str(DataHome / "applications"),
+                DBusServicesDir=str(DataHome / "dbus-1" / "services"),
+                # xdg-desktop-portal: where a portal file goes (your own folder
+                # where it's new enough, no password), the preferences file
+                # (portals.conf without a desktop name, e.g. a window manager),
+                # and the desktop's own entry in its list ("cosmic;" or "").
+                PortalsDir=str(DataHome / "xdg-desktop-portal" / "portals") if UserPortalsSupported()
+                else "/usr/share/xdg-desktop-portal/portals",
+                PortalsConf=f"{Desktop.lower()}-portals.conf" if Desktop else "portals.conf",
+                DesktopPortal=f"{Desktop.lower()};" if Desktop else "",
+            )
         Context.update(Answers or {})
         return Context
 
@@ -200,8 +278,18 @@ def _LoadHooks(Folder: Path, Name: str) -> Optional[ModuleType]:
     return Module
 
 
+def _ForPlatform(Items: list[dict]) -> list[dict]:
+    """Drop the items meant for the other system (their Platform key)."""
+    Kept = []
+    for Item in Items:
+        Item = dict(Item)
+        if Item.pop("Platform", Platform) == Platform:
+            Kept.append(Item)
+    return Kept
+
+
 def LoadProgram(Folder: Path) -> Program:
-    Data = tomlkit.parse((Folder / "Manifest.toml").read_text()).unwrap()
+    Data = tomlkit.parse((Folder / "Manifest.toml").read_text(encoding="utf-8")).unwrap()
     Source = Data.get("Source", {})
     Version = Data.get("Version", {})
     Python = Data.get("Python", {})
@@ -218,14 +306,18 @@ def LoadProgram(Folder: Path) -> Program:
         VersionPattern=Version.get("Pattern", ""),
         Requirements=Python.get("Requirements", []),
         RequirementsFile=Python.get("RequirementsFile", ""),
-        Options=[Option(**Item) for Item in Data.get("Options", [])],
-        Questions=[Question(**Item) for Item in Data.get("Questions", [])],
-        Templates=[TemplateFile(**Item) for Item in Data.get("Templates", [])],
-        Configs=[ConfigFile(**Item) for Item in Data.get("Configs", [])],
-        IniEdits=[IniEdit(**Item) for Item in Data.get("IniEdits", [])],
-        Services=[Service(**Item) for Item in Data.get("Services", [])],
-        RestartUnits=Data.get("RestartUnits", []),
-        Leftovers=[Leftover(**Item) for Item in Data.get("Leftovers", [])],
+        Options=[Option(**Item) for Item in _ForPlatform(Data.get("Options", []))],
+        Questions=[Question(**Item) for Item in _ForPlatform(Data.get("Questions", []))],
+        # Without systemd, its unit files would just sit there unused.
+        Templates=[TemplateFile(**Item) for Item in _ForPlatform(Data.get("Templates", []))
+                   if HasSystemd or "{SystemdUserDir}" not in Item.get("Target", "")],
+        Configs=[ConfigFile(**Item) for Item in _ForPlatform(Data.get("Configs", []))],
+        IniEdits=[IniEdit(**Item) for Item in _ForPlatform(Data.get("IniEdits", []))],
+        Services=[Service(**Item) for Item in _ForPlatform(Data.get("Services", []))],
+        RestartUnits=Data.get("RestartUnits", []) if IsLinux else [],
+        Leftovers=[Leftover(**Item) for Item in _ForPlatform(Data.get("Leftovers", []))],
+        Shortcuts=[Shortcut(**Item) for Item in _ForPlatform(Data.get("Shortcuts", []))],
+        Platforms=Data.get("Platforms", ["Linux"]),
         Hooks=_LoadHooks(Folder, Data["Name"]),
     )
 
@@ -246,6 +338,8 @@ def LoadPrograms() -> list[Program]:
         Loaded = _LoadFrom(ManifestsDir())
     except Exception:
         Loaded = _LoadFrom(BundledManifestsDir)
+    # Only the programs that run on this system (the .exe lists Windows ones, the Mac app macOS ones).
+    Loaded = [Current for Current in Loaded if Platform in Current.Platforms]
     Names = {Current.Name for Current in Loaded}
     Ordered = []
     for Current in Loaded:

Packaging/BuildAppImage.sh

@@ -1,18 +1,37 @@
 #!/bin/bash
 # Builds dist/SaraSuite-x86_64.AppImage: a PyInstaller one-file build (with
 # the program manifests, fonts and icon bundled) wrapped by appimagetool,
-# the same way SaraFem's AppImage is made. Needs appimagetool on PATH.
+# the same way SaraFem's AppImage is made. Needs podman and appimagetool
+# on PATH.
 set -euo pipefail
 cd "$(dirname "$(readlink -f "$0")")/.."
 
-.venv/bin/pip install --quiet --disable-pip-version-check pyinstaller
 find Programs -name __pycache__ -type d -prune -exec rm -rf {} +
 
-.venv/bin/pyinstaller --noconfirm --clean --log-level WARN \
-    --onefile --windowed --name SaraSuite --collect-data flet \
-    --add-data "$PWD/assets:assets" --add-data "$PWD/Programs:Programs" \
-    --distpath build/PyInstaller/dist --workpath build/PyInstaller/work --specpath build/PyInstaller \
-    "$PWD/Main.py"
+# PyInstaller runs in a manylinux_2_28 container (glibc 2.28) with uv's
+# portable Python, not with Fedora's: PyInstaller bundles libpython, and
+# Fedora's needs a newer glibc than many distros have ("GLIBC_ABI_GNU2_TLS
+# not found"). The Python, venv and downloads are cached in build/Container.
+mkdir -p build/Container
+podman run --rm --security-opt label=disable -v "$PWD:/src" -w /src \
+    -e UV_CACHE_DIR=/src/build/Container/cache -e UV_PYTHON_INSTALL_DIR=/src/build/Container/python \
+    quay.io/pypa/manylinux_2_28_x86_64 bash -euo pipefail -c '
+    uv venv --quiet --allow-existing --managed-python --python 3.14 build/Container/venv
+    uv pip install --quiet --python build/Container/venv -r requirements.txt flet-desktop pyinstaller
+    # The Flet window needs libsecret, which some systems lack: bundled as a
+    # fallback (RestoreLibraryPath.py uses only what the system lacks).
+    dnf -y -q install libsecret >/dev/null
+    mkdir -p build/FallbackLibs
+    for Library in libsecret-1.so.0 libgcrypt.so.20 libgpg-error.so.0; do cp -L /usr/lib64/$Library build/FallbackLibs/; done
+    # Each finds the others beside it, wherever they are put (a client lib folder).
+    patchelf --set-rpath "\$ORIGIN" build/FallbackLibs/libsecret-1.so.0 build/FallbackLibs/libgcrypt.so.20
+    build/Container/venv/bin/pyinstaller --noconfirm --clean --log-level WARN \
+        --onefile --windowed --name SaraSuite --collect-data flet \
+        --runtime-hook "$PWD/Packaging/RestoreLibraryPath.py" \
+        --add-data "$PWD/build/FallbackLibs:FallbackLibs" \
+        --add-data "$PWD/assets:assets" --add-data "$PWD/Programs:Programs" \
+        --distpath build/PyInstaller/dist --workpath build/PyInstaller/work --specpath build/PyInstaller \
+        "$PWD/Main.py"'
 
 AppDir=build/AppDir
 rm -rf "$AppDir"

Packaging/BuildExe.sh

@@ -0,0 +1,48 @@
+#!/bin/bash
+# Builds dist/SaraSuite.exe, the Windows version: the same PyInstaller
+# one-file recipe as the AppImage, run with the Windows Python inside a Wine
+# prefix (build/WinBuild/Prefix; PyInstaller can't build for Windows from
+# Linux directly). The first run sets that prefix up: it downloads the
+# official Windows Python and installs the build requirements into it.
+set -euo pipefail
+cd "$(dirname "$(readlink -f "$0")")/.."
+
+PythonVersion=3.14.8
+export WINEPREFIX="$PWD/build/WinBuild/Prefix" WINEDEBUG=-all WINEARCH=win64
+WinPython='C:\Python314\python.exe'
+
+if [ ! -f "$WINEPREFIX/drive_c/Python314/python.exe" ]; then
+    echo "== Setting up the Windows build environment (one-time)"
+    mkdir -p build/WinBuild
+    Installer="build/WinBuild/python-$PythonVersion-amd64.exe"
+    [ -f "$Installer" ] || curl -sfL -o "$Installer" "https://www.python.org/ftp/python/$PythonVersion/python-$PythonVersion-amd64.exe"
+    wineboot -i >/dev/null 2>&1 || true
+    wine "$Installer" /quiet InstallAllUsers=0 PrependPath=1 Include_test=0 TargetDir='C:\Python314'
+fi
+wine "$WinPython" -m pip install --quiet --disable-pip-version-check -r requirements.txt pyinstaller pylnk3 pillow
+
+find Programs -name __pycache__ -type d -prune -exec rm -rf {} +
+Win() { winepath -w "$1"; }
+
+# The window/taskbar/Explorer icon, from the same pixel art at whole multiples of its grid.
+wine "$WinPython" -c "
+from PIL import Image
+Grid = Image.open(r'$(Win assets/Icon.png)').convert('RGBA').resize((32, 32), Image.NEAREST)
+Grid.resize((256, 256), Image.NEAREST).save(r'$(Win build/WinBuild/Icon.ico)', sizes=[(S, S) for S in (256, 128, 64, 32, 16)])
+"
+
+# --python-option "X utf8": Python's UTF-8 mode, since on Windows it would
+# otherwise read and write every TOML file in the old ANSI code page.
+wine "$WinPython" -m PyInstaller --noconfirm --clean --log-level WARN \
+    --onefile --windowed --name SaraSuite --collect-data flet \
+    --python-option "X utf8" \
+    --icon "$(Win build/WinBuild/Icon.ico)" \
+    --add-data "$(Win assets);assets" --add-data "$(Win Programs);Programs" \
+    --distpath "$(Win build/WinBuild/dist)" --workpath "$(Win build/WinBuild/work)" --specpath "$(Win build/WinBuild)" \
+    "$(Win Main.py)"
+
+mkdir -p dist
+# Renamed into place, like the AppImage, in case one is running from dist/.
+cp build/WinBuild/dist/SaraSuite.exe dist/SaraSuite.exe.new
+mv -f dist/SaraSuite.exe.new dist/SaraSuite.exe
+echo "Built dist/SaraSuite.exe"

Packaging/BuildMacApp.py

@@ -0,0 +1,220 @@
+#!/usr/bin/env python3
+"""Build dist/SaraSuite-macOS.zip (SaraSuite.app, Apple Silicon) on Linux.
+
+PyInstaller can only build a Mac app on a Mac, so this puts the app together
+from parts that need no compiling:
+- a standalone Python for macOS (python-build-standalone, the Pythons uv installs);
+- SaraSuite's requirements as macOS wheels (pip download for the Mac platform);
+- the Flet desktop client for macOS, bundled where flet-desktop looks for it,
+  so the first start needs no download;
+- SaraSuite's own code, assets and Programs/;
+- Contents/MacOS/SaraSuite, a shell script that runs Main.py with that Python.
+
+The app isn't signed by an Apple developer account, so the first start needs
+System Settings > Privacy & Security > Open Anyway (see the website's
+instructions). Its launcher then clears the download quarantine from the
+whole app, so the Python and Flet inside it run too.
+
+    Packaging/BuildMacApp.py       # also run by Packaging/Release.py
+"""
+
+import io
+import json
+import os
+import plistlib
+import re
+import shutil
+import stat
+import subprocess
+import sys
+import tarfile
+import time
+import urllib.request
+import zipfile
+from pathlib import Path
+
+RepoDir = Path(__file__).resolve().parent.parent
+BuildDir = RepoDir / "build" / "MacBuild"
+DownloadsDir = BuildDir / "Downloads"  # kept between builds
+BuildVenv = BuildDir / "Venv"  # Pillow, for the .icns
+Output = RepoDir / "dist" / "SaraSuite-macOS.zip"
+
+PythonVersion = "3.14"
+MacPlatform = "macosx_11_0_arm64"
+PythonTarget = "aarch64-apple-darwin"
+StandaloneReleases = "https://api.github.com/repos/astral-sh/python-build-standalone/releases/latest"
+AppIdentifier = "srhtnin.SaraSuite"
+UserAgent = "SaraSuite-Build (Python)"
+
+# The launcher won't run from the read-only copy macOS makes of a quarantined
+# app that wasn't moved out of Downloads (App Translocation): neither clearing
+# the quarantine nor self-updating would work there.
+Launcher = '''#!/bin/sh
+# SaraSuite.app's launcher (written by Packaging/BuildMacApp.py).
+Contents="$(cd "$(dirname "$0")/.." && pwd -P)"
+App="$(dirname "$Contents")"
+case "$App" in
+    */AppTranslocation/*)
+        /usr/bin/osascript -e 'display alert "Move SaraSuite to Applications first" message "Drag SaraSuite from your Downloads folder into Applications, then open it from there."' >/dev/null 2>&1
+        exit 1 ;;
+esac
+# Downloaded apps are quarantined, the Python and Flet inside included. Once
+# macOS has let SaraSuite itself open, the rest of it may run too.
+/usr/bin/xattr -dr com.apple.quarantine "$App" 2>/dev/null
+export SARASUITE_APP="$App"
+exec "$Contents/Resources/Python/bin/python3" "$Contents/Resources/SaraSuite/Main.py" "$@"
+'''
+
+
+def Download(Url: str, Name: str) -> Path:
+    """Into DownloadsDir, once."""
+    Target = DownloadsDir / Name
+    if Target.is_file():
+        return Target
+    print(f"Downloading {Url}")
+    DownloadsDir.mkdir(parents=True, exist_ok=True)
+    Request = urllib.request.Request(Url, headers={"User-Agent": UserAgent})
+    with urllib.request.urlopen(Request, timeout=600) as Response:
+        Partial = Target.with_suffix(".part")
+        Partial.write_bytes(Response.read())
+        Partial.replace(Target)
+    return Target
+
+
+def StandalonePython() -> Path:
+    """The latest python-build-standalone release of PythonVersion for Apple Silicon."""
+    Request = urllib.request.Request(StandaloneReleases, headers={"User-Agent": UserAgent})
+    with urllib.request.urlopen(Request, timeout=60) as Response:
+        Assets = json.load(Response)["assets"]
+    Pattern = re.compile(rf"cpython-{re.escape(PythonVersion)}\.\d+\+\d+-{PythonTarget}-install_only_stripped\.tar\.gz")
+    Asset = next((Item for Item in Assets if Pattern.fullmatch(Item["name"])), None)
+    if Asset is None:
+        sys.exit(f"BuildMacApp.py: no Python {PythonVersion} for {PythonTarget} in the latest python-build-standalone release")
+    return Download(Asset["browser_download_url"], Asset["name"])
+
+
+def MakeIcns(Png: Path, Icns: Path) -> None:
+    """Same as MacSupport.MakeIcns: whole multiples of the 32x32 art grid."""
+    from PIL import Image
+
+    Grid = Image.open(Png).convert("RGBA").resize((32, 32), Image.NEAREST)
+    Sizes = [Grid.resize((Size, Size), Image.NEAREST) for Size in (16, 32, 64, 128, 256, 512, 1024)]
+    Sizes[-1].save(Icns, format="ICNS", append_images=Sizes[:-1])
+
+
+def CopyCode(Destination: Path) -> None:
+    Ignore = shutil.ignore_patterns("__pycache__", "*.pyc")
+    Destination.mkdir(parents=True)
+    for Source in sorted(RepoDir.glob("*.py")):
+        shutil.copy2(Source, Destination / Source.name)
+    shutil.copytree(RepoDir / "assets", Destination / "assets", ignore=Ignore)
+    shutil.copytree(RepoDir / "Programs", Destination / "Programs", ignore=Ignore)
+
+
+def Zip(Bundle: Path, Target: Path) -> None:
+    """Zip the app keeping what a Mac app needs: execute bits and symlinks
+    (Python's bin/python3 is one), the way Finder's Archive Utility and
+    ditto read them back."""
+    Target.parent.mkdir(parents=True, exist_ok=True)
+    Partial = Target.with_suffix(".zip.new")
+    with zipfile.ZipFile(Partial, "w", zipfile.ZIP_DEFLATED, compresslevel=9) as Archive:
+        for Current in [Bundle, *sorted(Bundle.rglob("*"))]:
+            Name = Current.relative_to(Bundle.parent).as_posix()
+            Mode = Current.lstat().st_mode
+            Stamp = time.localtime(max(Current.lstat().st_mtime, 315532800))[:6]  # zip dates start in 1980
+            if Current.is_symlink():
+                Info = zipfile.ZipInfo(Name, Stamp)
+                Info.create_system = 3  # Unix, so the mode below counts
+                Info.external_attr = (stat.S_IFLNK | 0o755) << 16
+                Archive.writestr(Info, os.readlink(Current))
+            elif Current.is_dir():
+                Info = zipfile.ZipInfo(Name + "/", Stamp)
+                Info.create_system = 3
+                Info.external_attr = (stat.S_IFDIR | 0o755) << 16 | 0x10
+                Archive.writestr(Info, b"")
+            else:
+                Info = zipfile.ZipInfo.from_file(Current, Name)
+                Info.create_system = 3
+                Info.external_attr = (stat.S_IFREG | (0o755 if Mode & 0o111 else 0o644)) << 16
+                Info.compress_type = zipfile.ZIP_DEFLATED
+                Archive.writestr(Info, Current.read_bytes())
+    Partial.replace(Target)
+
+
+def Main() -> None:
+    try:
+        import PIL  # noqa: F401
+    except ImportError:
+        # Pillow for the icon: run this script again from a build venv that has it.
+        if not (BuildVenv / "bin" / "python").exists():
+            subprocess.run([sys.executable, "-m", "venv", str(BuildVenv)], check=True)
+            subprocess.run([str(BuildVenv / "bin" / "python"), "-m", "pip", "install", "--quiet", "pillow"], check=True)
+        os.execv(BuildVenv / "bin" / "python", [str(BuildVenv / "bin" / "python"), __file__, *sys.argv[1:]])
+
+    Version = re.search(r'^AppVersion = "([^"]+)"', (RepoDir / "Core.py").read_text(), re.MULTILINE)[1]
+    Stage = BuildDir / "Stage"
+    shutil.rmtree(Stage, ignore_errors=True)
+    Bundle = Stage / "SaraSuite.app"
+    Contents = Bundle / "Contents"
+    Resources = Contents / "Resources"
+    (Contents / "MacOS").mkdir(parents=True)
+    Resources.mkdir()
+
+    # Python, unpacked as Resources/Python.
+    with tarfile.open(StandalonePython()) as Tar:
+        Tar.extractall(Resources, filter="tar")
+    (Resources / "python").rename(Resources / "Python")
+    SitePackages = next((Resources / "Python" / "lib").glob("python3.*")) / "site-packages"
+    Minor = SitePackages.parent.name.removeprefix("python")
+
+    # SaraSuite's requirements as macOS wheels, straight into that Python.
+    # (Pillow and flet-desktop are only for macOS, so they're named here: pip
+    # judges requirements.txt's markers by this Linux machine.)
+    Requirements = [Line for Line in (RepoDir / "requirements.txt").read_text().splitlines()
+                    if Line.strip() and not Line.startswith("#") and "sys_platform" not in Line]
+    print("Installing the macOS wheels")
+    subprocess.run([
+        sys.executable, "-m", "pip", "install", "--quiet", "--disable-pip-version-check", "--no-compile",
+        "--target", str(SitePackages), "--platform", MacPlatform, "--python-version", Minor,
+        "--implementation", "cp", "--abi", f"cp{Minor.replace('.', '')}", "--only-binary=:all:",
+        *Requirements, "pillow", "flet-desktop",
+    ], check=True)
+    FletVersion = re.search(r'version = "([^"]+)"', (SitePackages / "flet_desktop" / "version.py").read_text())[1]
+    Wanted = re.search(r"^Version: (.+)$", next(SitePackages.glob("flet-*.dist-info/METADATA")).read_text(), re.MULTILINE)[1]
+    if FletVersion != Wanted:
+        sys.exit(f"BuildMacApp.py: flet {Wanted} but flet-desktop {FletVersion}")
+
+    # The Flet client, where flet-desktop looks for a bundled one first.
+    Client = Download(f"https://github.com/flet-dev/flet/releases/download/v{FletVersion}/flet-macos.tar.gz",
+                      f"flet-macos-{FletVersion}.tar.gz")
+    (SitePackages / "flet_desktop" / "app").mkdir(exist_ok=True)
+    shutil.copy2(Client, SitePackages / "flet_desktop" / "app" / "flet-macos.tar.gz")
+
+    CopyCode(Resources / "SaraSuite")
+    MakeIcns(RepoDir / "assets" / "Icon.png", Resources / "SaraSuite.icns")
+    Executable = Contents / "MacOS" / "SaraSuite"
+    Executable.write_text(Launcher)
+    Executable.chmod(0o755)
+    with (Contents / "Info.plist").open("wb") as File:
+        plistlib.dump({
+            "CFBundleName": "SaraSuite",
+            "CFBundleDisplayName": "SaraSuite",
+            "CFBundleIdentifier": AppIdentifier,
+            "CFBundleExecutable": "SaraSuite",
+            "CFBundleIconFile": "SaraSuite.icns",
+            "CFBundlePackageType": "APPL",
+            "CFBundleInfoDictionaryVersion": "6.0",
+            "CFBundleShortVersionString": Version,
+            "CFBundleVersion": Version,
+            "LSMinimumSystemVersion": "11.0",
+            "LSArchitecturePriority": ["arm64"],
+            "NSHighResolutionCapable": True,
+            "NSHumanReadableCopyright": "Install, update and remove Sara programs",
+        }, File)
+
+    Zip(Bundle, Output)
+    print(f"Built {Output.relative_to(RepoDir)} ({Output.stat().st_size // 1_000_000} MB)")
+
+
+if __name__ == "__main__":
+    Main()

Packaging/Release.py

@@ -1,7 +1,10 @@
 #!/usr/bin/env python3
-"""Publish a SaraSuite release: build the AppImage, create the Gitea release
-v<AppVersion> (from Core.py) with it attached, and copy it to the Shared
-folder. Running SaraSuites then offer to update themselves (SelfUpdate.py).
+"""Publish a SaraSuite release: build the AppImage (Linux), SaraSuite.exe
+(Windows, built under Wine by BuildExe.sh) and SaraSuite-macOS.zip (Apple
+Silicon, put together by BuildMacApp.py), create the Gitea release
+v<AppVersion> (from Core.py) with all three attached, and copy them to the
+Shared folder. Running SaraSuites then offer to update themselves (SelfUpdate.py),
+each to its own platform's file.
 
     Packaging/Release.py            # after bumping AppVersion in Core.py
     Packaging/Release.py --notes "What changed"
@@ -25,7 +28,12 @@ from pathlib import Path
 from urllib.parse import urlsplit
 
 RepoDir = Path(__file__).resolve().parent.parent
-AppImage = RepoDir / "dist" / "SaraSuite-x86_64.AppImage"
+# Each running SaraSuite downloads the one for its own platform (SelfUpdate.AssetName).
+Builds = [
+    ("Packaging/BuildAppImage.sh", RepoDir / "dist" / "SaraSuite-x86_64.AppImage"),
+    ("Packaging/BuildExe.sh", RepoDir / "dist" / "SaraSuite.exe"),
+    ("Packaging/BuildMacApp.py", RepoDir / "dist" / "SaraSuite-macOS.zip"),
+]
 SharedDir = Path("/mnt/files/Shared/SaraSuite")
 
 
@@ -93,26 +101,29 @@ def Main() -> None:
         Range = f"{Previous[0]}..HEAD" if Previous else "HEAD"
         Notes = Git("log", "--format=- %s", Range) or "- First release with self-updates."
 
-    print(f"== Building SaraSuite {Version}")
-    subprocess.run(["Packaging/BuildAppImage.sh"], cwd=RepoDir, check=True,
-                   env={**os.environ, "PATH": f"{Path.home()}/.local/bin:{os.environ['PATH']}"})
+    for Script, Output in Builds:
+        print(f"== Building {Output.name} {Version}")
+        subprocess.run([Script], cwd=RepoDir, check=True,
+                       env={**os.environ, "PATH": f"{Path.home()}/.local/bin:{os.environ['PATH']}"})
 
     print(f"== Creating release {Tag}")
     Created = Api("POST", f"{ApiBase}/releases", TokenValue, json.dumps({
         "tag_name": Tag, "target_commitish": Head, "name": f"SaraSuite {Version}", "body": Notes,
     }).encode())
 
-    print(f"== Uploading {AppImage.name} ({AppImage.stat().st_size // 1_000_000} MB)")
-    Boundary = uuid.uuid4().hex
-    Body = (
-        f"--{Boundary}\r\nContent-Disposition: form-data; name=\"attachment\"; filename=\"{AppImage.name}\"\r\n"
-        f"Content-Type: application/octet-stream\r\n\r\n"
-    ).encode() + AppImage.read_bytes() + f"\r\n--{Boundary}--\r\n".encode()
-    Api("POST", f"{ApiBase}/releases/{Created['id']}/assets?name={AppImage.name}", TokenValue, Body,
-        f"multipart/form-data; boundary={Boundary}")
+    for _Script, Output in Builds:
+        print(f"== Uploading {Output.name} ({Output.stat().st_size // 1_000_000} MB)")
+        Boundary = uuid.uuid4().hex
+        Body = (
+            f"--{Boundary}\r\nContent-Disposition: form-data; name=\"attachment\"; filename=\"{Output.name}\"\r\n"
+            f"Content-Type: application/octet-stream\r\n\r\n"
+        ).encode() + Output.read_bytes() + f"\r\n--{Boundary}--\r\n".encode()
+        Api("POST", f"{ApiBase}/releases/{Created['id']}/assets?name={Output.name}", TokenValue, Body,
+            f"multipart/form-data; boundary={Boundary}")
 
     if SharedDir.is_dir():
-        shutil.copy2(AppImage, SharedDir / AppImage.name)
+        for _Script, Output in Builds:
+            shutil.copy2(Output, SharedDir / Output.name)
         print(f"== Copied to {SharedDir}")
     Git("fetch", "--quiet", "--tags", "origin")  # the new tag, for the next release's notes
     print(f"== Released {Tag}: {Origin.scheme}://{Origin.netloc}/{Owner}/{Repo}/releases/tag/{Tag}")

Packaging/RestoreLibraryPath.py

@@ -0,0 +1,47 @@
+# PyInstaller runtime hook. The frozen app runs with LD_LIBRARY_PATH pointing
+# at its bundled libraries, and programs it starts inherit that: Flet's
+# desktop client then loads the bundled (older) libstdc++ instead of the
+# system's and won't start ("GLIBCXX_3.4.29 not found"). Give them the
+# original value back; the app itself has already loaded what it needs.
+#
+# Flet's window also needs libsecret, which isn't part of GTK and some
+# systems don't install ("libsecret-1.so.0: cannot open shared object file").
+# The build bundles it in FallbackLibs, with libgcrypt and libgpg-error, which
+# it needs; the ones this system lacks (only those) are offered to what the
+# app starts, after the original path.
+import os
+import subprocess
+import sys
+
+
+def SystemHas(Name):
+    """Whether the system itself has a library: asked of its linker cache
+    and standard folders, not dlopen, which would also find this bundle's
+    own copies (PyInstaller adds what bundled libraries need)."""
+    for Folder in ("/usr/lib64", "/usr/lib", "/lib64", "/lib", "/usr/lib/x86_64-linux-gnu", "/lib/x86_64-linux-gnu"):
+        if os.path.exists(os.path.join(Folder, Name)):
+            return True
+    try:
+        Cache = subprocess.run(["ldconfig", "-p"], capture_output=True, text=True, timeout=10,
+                               env={"PATH": "/usr/sbin:/usr/bin:/sbin:/bin"}).stdout
+    except (OSError, subprocess.SubprocessError):
+        return False
+    return any(Line.strip().startswith(Name + " ") for Line in Cache.splitlines())
+
+Paths = [os.environ["LD_LIBRARY_PATH_ORIG"]] if os.environ.get("LD_LIBRARY_PATH_ORIG") else []
+
+Bundle = getattr(sys, "_MEIPASS", "")
+Fallback = os.path.join(Bundle, "FallbackLibs")
+if sys.platform.startswith("linux") and os.path.isdir(Fallback):
+    InUse = os.path.join(Bundle, "FallbackLibsInUse")
+    os.makedirs(InUse, exist_ok=True)
+    for Name in ("libgpg-error.so.0", "libgcrypt.so.20", "libsecret-1.so.0"):
+        if not SystemHas(Name) and not os.path.lexists(os.path.join(InUse, Name)):
+            os.symlink(os.path.join(Fallback, Name), os.path.join(InUse, Name))
+    if os.listdir(InUse):
+        Paths.append(InUse)
+
+if Paths:
+    os.environ["LD_LIBRARY_PATH"] = os.pathsep.join(Paths)
+else:
+    os.environ.pop("LD_LIBRARY_PATH", None)

Programs/FletIdentity.py

@@ -18,13 +18,51 @@ Used two ways:
   case Flet just uses its normal client.
 """
 
+import os
+import shutil
 import sys
 from pathlib import Path
 
 OriginalId = b"com.appveyor.flet"
+# Flet's window needs libsecret, which isn't part of GTK and some systems don't
+# install. SaraSuite keeps copies of it and what it needs (from its AppImage)
+# here; AddMissingLibraries puts the ones this system lacks in a fallback-libs
+# folder beside the client copy, which the program's Launch.sh adds to
+# LD_LIBRARY_PATH (a plugin loads libsecret, so the client's own lib folder,
+# its RUNPATH, wouldn't be searched for it).
+LibrariesDir = Path(os.environ.get("XDG_DATA_HOME") or Path.home() / ".local" / "share") / "SaraSuite" / "Libraries"
+FallbackLibraries = ("libgpg-error.so.0", "libgcrypt.so.20", "libsecret-1.so.0")
 CopiesDir = Path.home() / ".cache" / "SaraSuite" / "FletClient"
 
 
+def _SystemHas(Name: str) -> bool:
+    """Whether the system has a library (its standard folders and linker
+    cache; the same check as the AppImages' RestoreLibraryPath.py)."""
+    import subprocess
+
+    for Folder in ("/usr/lib64", "/usr/lib", "/lib64", "/lib", "/usr/lib/x86_64-linux-gnu", "/lib/x86_64-linux-gnu"):
+        if (Path(Folder) / Name).exists():
+            return True
+    try:
+        Cache = subprocess.run(["ldconfig", "-p"], capture_output=True, text=True, timeout=10,
+                               env={"PATH": "/usr/sbin:/usr/bin:/sbin:/bin"}).stdout
+    except (OSError, subprocess.SubprocessError):
+        return False
+    return any(Line.strip().startswith(Name + " ") for Line in Cache.splitlines())
+
+
+def AddMissingLibraries(Folder: Path) -> None:
+    """Copies SaraSuite's fallback libraries the system doesn't have into
+    Folder (created only if one is needed)."""
+    if not sys.platform.startswith("linux") or not LibrariesDir.is_dir():
+        return
+    for Name in FallbackLibraries:
+        Source = LibrariesDir / Name
+        if Source.is_file() and not (Folder / Name).exists() and not _SystemHas(Name):
+            Folder.mkdir(parents=True, exist_ok=True)
+            shutil.copy2(Source, Folder / Name)
+
+
 def ClientFor(AppId: str) -> str:
     """Folder of a client copy whose app ID is AppId ("" if not possible).
     AppId needs a dot (a GTK rule) and at most 17 characters, the length of
@@ -45,6 +83,7 @@ def ClientFor(AppId: str) -> str:
         if Binary.count(b"\x00" + OriginalId + b"\x00") != 1:
             return ""  # not the client layout this was written for
 
+        AddMissingLibraries(Copy.parent / "fallback-libs")
         Target = Copy / "flet"
         if not (Target.exists() and Target.read_bytes() == Patched):
             Copy.mkdir(parents=True, exist_ok=True)
@@ -64,4 +103,16 @@ def ClientFor(AppId: str) -> str:
 
 
 if __name__ == "__main__":
-    print(ClientFor(sys.argv[1]) if len(sys.argv) > 1 else "")
+    # Only the folder goes to stdout, which the launcher reads: Flet's own
+    # messages ("Preparing Flet ... for the first use", written straight to
+    # the file descriptor) go to stderr.
+    sys.stdout.flush()
+    Stdout = os.dup(1)
+    os.dup2(2, 1)
+    try:
+        Folder = ClientFor(sys.argv[1]) if len(sys.argv) > 1 else ""
+    finally:
+        sys.stdout.flush()
+        os.dup2(Stdout, 1)
+        os.close(Stdout)
+    print(Folder)

Programs/SaraFem/Manifest.toml

@@ -1,5 +1,6 @@
 Name = "SaraFem"
-Description = "Desktop file manager that understands SaraTag Books, and can stand in as the system file picker."
+Description = "Desktop file manager that understands SaraTag Books, and (on Linux) can stand in as the system file picker."
+Platforms = ["Linux", "Windows", "macOS"]
 
 # The portal reads its descriptors and preferences once at startup.
 RestartUnits = ["xdg-desktop-portal.service"]
@@ -12,61 +13,90 @@ Exclude = ["Packaging"]
 [Python]
 RequirementsFile = "requirements.txt"
 
+# The file picker (xdg-desktop-portal) and default file manager (mimeapps.list)
+# are Linux things; Windows has no equivalent SaraFem can plug into.
 [[Options]]
+Platform = "Linux"
 Id = "FilePicker"
-Label = "Use SaraFem as the system file picker (asks for your password: the portal file lives in /usr/share)"
+Label = "Use SaraFem as the system file picker"
 Default = true
 
 [[Options]]
+Platform = "Linux"
 Id = "DefaultFileManager"
 Label = "Make SaraFem the default file manager"
 Default = false
 
+# Linux: a launcher, a desktop entry, and the file picker's portal service.
 [[Templates]]
+Platform = "Linux"
 Source = "Launch.sh"
 Target = "{AppDir}/Packaging/Launch.sh"  # where PortalService.py looks for it
 Executable = true
 
 [[Templates]]
+Platform = "Linux"
 Source = "SaraFem.desktop"
 Target = "{ApplicationsDir}/SaraFem.desktop"
 
 [[Templates]]
+Platform = "Linux"
 Source = "PortalService.service"
 Target = "{DBusServicesDir}/org.freedesktop.impl.portal.desktop.SaraFem.service"
 Option = "FilePicker"
 
 [[Templates]]
+Platform = "Linux"
 Source = "SaraFem.portal"
-Target = "/usr/share/xdg-desktop-portal/portals/SaraFem.portal"
+# In your own folder where xdg-desktop-portal is new enough (1.17+); in
+# /usr/share, through pkexec, on older systems.
+Target = "{PortalsDir}/SaraFem.portal"
 Option = "FilePicker"
-Root = true
+Root = "Auto"
 
 [[IniEdits]]
-File = "{ConfigHome}/xdg-desktop-portal/{Desktop}-portals.conf"
+Platform = "Linux"
+File = "{ConfigHome}/xdg-desktop-portal/{PortalsConf}"
 Section = "preferred"
 Key = "org.freedesktop.impl.portal.FileChooser"
-Value = "SaraFem;{Desktop};gtk;"
+Value = "SaraFem;{DesktopPortal}gtk;"
 Option = "FilePicker"
 
 [[IniEdits]]
+Platform = "Linux"
 File = "{ConfigHome}/mimeapps.list"
 Section = "Default Applications"
 Key = "inode/directory"
 Value = "SaraFem.desktop"
 Option = "DefaultFileManager"
 
+# Windows: a Start Menu shortcut (pythonw.exe Main.py, from the app folder).
+[[Shortcuts]]
+Platform = "Windows"
+Name = "SaraFem"
+Script = "Main.py"
+Icon = "assets/Icon.png"
+
+# macOS: an app bundle, ~/Applications/SaraFem.app (python Main.py, from the app folder).
+[[Shortcuts]]
+Platform = "macOS"
+Name = "SaraFem"
+Script = "Main.py"
+Icon = "assets/Icon.png"
+
 [[Leftovers]]
 Path = "{CacheHome}/SaraFem"
 Kind = "Runtime"
 Note = "thumbnail cache"
 
 [[Leftovers]]
+Platform = "Linux"
 Path = "{ConfigHome}/SaraFem"
 Kind = "Config"
 Note = "old pre-SaraSuite config location"
 
 # Shared with the other Flet programs; see Programs/FletIdentity.py.
 [[Templates]]
+Platform = "Linux"
 Source = "../../FletIdentity.py"
 Target = "{ProgramDir}/FletIdentity.py"

Programs/SaraFem/Templates/Launch.sh

@@ -4,5 +4,9 @@
 # matches the window to {Name}.desktop (StartupWMClass) instead of showing it
 # as "com.appveyor.flet". Empty if that fails: Flet then uses its own client.
 export FLET_VIEW_PATH="$("{Python}" "{ProgramDir}/FletIdentity.py" "srhtnin.{Name}")"
+# Libraries Flet's window needs that this system lacks (libsecret), from
+# SaraSuite: FletIdentity.py puts them beside the client copy.
+Fallback="$FLET_VIEW_PATH/../fallback-libs"
+[ -n "$FLET_VIEW_PATH" ] && [ -d "$Fallback" ] && export LD_LIBRARY_PATH="${LD_LIBRARY_PATH:+$LD_LIBRARY_PATH:}$Fallback"
 cd "{AppDir}" || exit 1
 exec "{Python}" Main.py "$@"

Programs/SaraSort/Manifest.toml

@@ -1,6 +1,7 @@
 # Kept in sync between SaraSuite/Programs/SaraSort/ and SaraSort/Packaging/SaraSuite/.
 Name = "SaraSort"
 Parent = "SaraSortd"  # a GUI for SaraSortd, listed under it
+Platforms = ["Linux", "Windows", "macOS"]
 Description = "A GUI for configuring SaraSortd: a flowchart of what goes where, its service and logs, configs and templates."
 
 [Source]
@@ -11,15 +12,32 @@ Exclude = ["Packaging"]
 [Python]
 RequirementsFile = "requirements.txt"
 
+# Linux: a launcher and a desktop entry.
 [[Templates]]
+Platform = "Linux"
 Source = "Launch.sh"
 Target = "{AppDir}/Packaging/Launch.sh"
 Executable = true
 
 [[Templates]]
+Platform = "Linux"
 Source = "SaraSort.desktop"
 Target = "{ApplicationsDir}/SaraSort.desktop"
 
+# Windows: a Start Menu shortcut (pythonw.exe Main.py, from the app folder).
+[[Shortcuts]]
+Platform = "Windows"
+Name = "SaraSort"
+Script = "Main.py"
+Icon = "assets/Icon.png"
+
+# macOS: an app bundle, ~/Applications/SaraSort.app (python Main.py, from the app folder).
+[[Shortcuts]]
+Platform = "macOS"
+Name = "SaraSort"
+Script = "Main.py"
+Icon = "assets/Icon.png"
+
 # Made by SaraSort itself: Config.toml, Layout.toml, Templates/.
 [[Leftovers]]
 Path = "{ConfigDir}"
@@ -28,5 +46,6 @@ Note = "SaraSort's settings, flowchart layout and your templates"
 
 # Shared with the other Flet programs; see Programs/FletIdentity.py.
 [[Templates]]
+Platform = "Linux"
 Source = "../../FletIdentity.py"
 Target = "{ProgramDir}/FletIdentity.py"

Programs/SaraSort/Templates/Launch.sh

@@ -4,5 +4,9 @@
 # matches the window to {Name}.desktop (StartupWMClass) instead of showing it
 # as "com.appveyor.flet". Empty if that fails: Flet then uses its own client.
 export FLET_VIEW_PATH="$("{Python}" "{ProgramDir}/FletIdentity.py" "srhtnin.{Name}")"
+# Libraries Flet's window needs that this system lacks (libsecret), from
+# SaraSuite: FletIdentity.py puts them beside the client copy.
+Fallback="$FLET_VIEW_PATH/../fallback-libs"
+[ -n "$FLET_VIEW_PATH" ] && [ -d "$Fallback" ] && export LD_LIBRARY_PATH="${LD_LIBRARY_PATH:+$LD_LIBRARY_PATH:}$Fallback"
 cd "{AppDir}" || exit 1
 exec "{Python}" Main.py "$@"

Programs/SaraSortd/Manifest.toml

@@ -1,5 +1,6 @@
 Name = "SaraSortd"
-Description = "Sorts files from input folders into output folders by the rules in its configs. Runs in the background as a systemd user service."
+Description = "Sorts files from input folders into output folders by the rules in its configs. Runs in the background."
+Platforms = ["Linux", "Windows", "macOS"]
 
 [Version]
 File = "SaraSortd.py"
@@ -39,12 +40,41 @@ Target = "{ConfigDir}/InputDirConf.toml"
 Source = "OutputDirConf.toml"
 Target = "{ConfigDir}/OutputDirConf.toml"
 
+# Linux with systemd: a systemd user service.
 [[Templates]]
+Platform = "Linux"
 Source = "SaraSortd.service"
 Target = "{SystemdUserDir}/SaraSortd.service"
 
+# Windows, macOS, and Linux without systemd (runit, OpenRC, s6, ...): run
+# from ConfigDir by ServiceRun.py, which restarts it if it fails, at login
+# through a shortcut in the Startup folder / a LaunchAgent / an XDG autostart
+# entry (SaraSuite's Services.py). On Linux the same service has a Unit for
+# systemd too.
+[[Templates]]
+Source = "../../ServiceRun.py"
+Target = "{ProgramDir}/ServiceRun.py"
+
 [[Services]]
+Platform = "Linux"
 Unit = "SaraSortd.service"
+Name = "SaraSortd"
+Script = "SaraSortd.py"
+WorkingDir = "{ConfigDir}"
+Option = "Autostart"
+
+[[Services]]
+Platform = "Windows"
+Name = "SaraSortd"
+Script = "SaraSortd.py"
+WorkingDir = "{ConfigDir}"
+Option = "Autostart"
+
+[[Services]]
+Platform = "macOS"
+Name = "SaraSortd"
+Script = "SaraSortd.py"
+WorkingDir = "{ConfigDir}"
 Option = "Autostart"
 
 # Everything SaraSortd makes inside the sorting folders is worked out from

Programs/SaraTag/Manifest.toml

@@ -1,5 +1,6 @@
 # Kept in sync between SaraSuite/Programs/SaraTag/ and SaraTag/Packaging/SaraSuite/.
 Name = "SaraTag"
+Platforms = ["Linux", "Windows", "macOS"]
 Description = "Tag files with Books (sidecars) defined by Lexicons: browse, filter and sort by tag, edit tags on many files at once."
 
 [Version]
@@ -20,15 +21,32 @@ RequirementsFile = "requirements.txt"
 Source = "Location.toml"
 Target = "{AppDir}/.saratag/Location.toml"  # tells .saratag/Core.py where the data lives
 
+# Linux: a launcher and a desktop entry.
 [[Templates]]
+Platform = "Linux"
 Source = "Launch.sh"
 Target = "{AppDir}/Packaging/Launch.sh"
 Executable = true
 
 [[Templates]]
+Platform = "Linux"
 Source = "SaraTag.desktop"
 Target = "{ApplicationsDir}/SaraTag.desktop"
 
+# Windows: a Start Menu shortcut (pythonw.exe Main.py, from the app folder).
+[[Shortcuts]]
+Platform = "Windows"
+Name = "SaraTag"
+Script = "Main.py"
+Icon = "assets/Icon.png"
+
+# macOS: an app bundle, ~/Applications/SaraTag.app (python Main.py, from the app folder).
+[[Shortcuts]]
+Platform = "macOS"
+Name = "SaraTag"
+Script = "Main.py"
+Icon = "assets/Icon.png"
+
 # Made by SaraTag itself. The Lexicons are your tag definitions: only tick
 # "remove configs" if you don't need them any more.
 [[Leftovers]]
@@ -38,5 +56,6 @@ Note = "SaraTag's settings, Records, Libraries, history and Lexicons (Books next
 
 # Shared with the other Flet programs; see Programs/FletIdentity.py.
 [[Templates]]
+Platform = "Linux"
 Source = "../../FletIdentity.py"
 Target = "{ProgramDir}/FletIdentity.py"

Programs/SaraTag/Templates/Launch.sh

@@ -4,5 +4,9 @@
 # matches the window to {Name}.desktop (StartupWMClass) instead of showing it
 # as "com.appveyor.flet". Empty if that fails: Flet then uses its own client.
 export FLET_VIEW_PATH="$("{Python}" "{ProgramDir}/FletIdentity.py" "srhtnin.{Name}")"
+# Libraries Flet's window needs that this system lacks (libsecret), from
+# SaraSuite: FletIdentity.py puts them beside the client copy.
+Fallback="$FLET_VIEW_PATH/../fallback-libs"
+[ -n "$FLET_VIEW_PATH" ] && [ -d "$Fallback" ] && export LD_LIBRARY_PATH="${LD_LIBRARY_PATH:+$LD_LIBRARY_PATH:}$Fallback"
 cd "{AppDir}" || exit 1
 exec "{Python}" Main.py "$@"

Programs/SaraTag/Templates/Location.toml

@@ -1,3 +1,4 @@
 # Written by SaraSuite. Where SaraTag keeps SaraTagConf.toml, its Records,
 # history and Lexicons (see .saratag/Core.py).
-DataDir = "{ConfigDir}"
+# A literal ('...') string: Windows paths are full of backslashes.
+DataDir = '{ConfigDir}'

Programs/SaraTune/Manifest.toml

@@ -0,0 +1,55 @@
+# Kept in sync between SaraSuite/Programs/SaraTune/ and SaraTune/Packaging/SaraSuite/.
+Name = "SaraTune"
+Platforms = ["Linux", "Windows", "macOS"]
+Description = "A music player with two modes: Audio to open a file or folder and listen right away, Music for your library, a queue and saved playlists. Linux needs libmpv (Fedora: mpv-libs)."
+
+[Source]
+Git = "{GitHost}/SaraTune"
+Include = ["*.py", "requirements.txt", "assets/**"]
+Exclude = ["Packaging"]
+
+[Python]
+RequirementsFile = "requirements.txt"
+
+# Linux: a launcher and a desktop entry (also offered for opening audio files).
+[[Templates]]
+Platform = "Linux"
+Source = "Launch.sh"
+Target = "{AppDir}/Packaging/Launch.sh"
+Executable = true
+
+[[Templates]]
+Platform = "Linux"
+Source = "SaraTune.desktop"
+Target = "{ApplicationsDir}/SaraTune.desktop"
+
+# Windows: a Start Menu shortcut (pythonw.exe Main.py, from the app folder).
+[[Shortcuts]]
+Platform = "Windows"
+Name = "SaraTune"
+Script = "Main.py"
+Icon = "assets/Icon.png"
+
+# macOS: an app bundle, ~/Applications/SaraTune.app (python Main.py, from the app folder).
+[[Shortcuts]]
+Platform = "macOS"
+Name = "SaraTune"
+Script = "Main.py"
+Icon = "assets/Icon.png"
+
+# Made by SaraTune itself.
+[[Leftovers]]
+Path = "{ConfigDir}"
+Kind = "Config"
+Note = "SaraTune's settings, saved queue and your playlists"
+
+[[Leftovers]]
+Path = "{CacheHome}/SaraSuite/SaraTune"
+Kind = "Runtime"
+Note = "library tag cache and cover thumbnails"
+
+# Shared with the other Flet programs; see Programs/FletIdentity.py.
+[[Templates]]
+Platform = "Linux"
+Source = "../../FletIdentity.py"
+Target = "{ProgramDir}/FletIdentity.py"

Programs/SaraTune/Templates/Launch.sh

@@ -0,0 +1,14 @@
+#!/bin/sh
+# Written by SaraSuite. Runs from the app folder so Flet finds assets/.
+# Flet's audio player is only in its "full" desktop client.
+export FLET_DESKTOP_FLAVOR=full
+# A Flet client copy with the window app ID srhtnin.{Name}, so the desktop
+# matches the window to {Name}.desktop (StartupWMClass) instead of showing it
+# as "com.appveyor.flet". Empty if that fails: Flet then uses its own client.
+export FLET_VIEW_PATH="$("{Python}" "{ProgramDir}/FletIdentity.py" "srhtnin.{Name}")"
+# Libraries Flet's window needs that this system lacks (libsecret), from
+# SaraSuite: FletIdentity.py puts them beside the client copy.
+Fallback="$FLET_VIEW_PATH/../fallback-libs"
+[ -n "$FLET_VIEW_PATH" ] && [ -d "$Fallback" ] && export LD_LIBRARY_PATH="${LD_LIBRARY_PATH:+$LD_LIBRARY_PATH:}$Fallback"
+cd "{AppDir}" || exit 1
+exec "{Python}" Main.py "$@"

Programs/SaraTune/Templates/SaraTune.desktop

@@ -0,0 +1,11 @@
+[Desktop Entry]
+Type=Application
+Name=SaraTune
+Comment=Play audio files and your music library
+Exec={AppDir}/Packaging/Launch.sh %F
+Icon={AppDir}/assets/Icon.png
+Terminal=false
+Categories=AudioVideo;Audio;Player;
+MimeType=audio/mpeg;audio/flac;audio/x-flac;audio/ogg;audio/x-vorbis+ogg;audio/opus;audio/x-opus+ogg;audio/wav;audio/x-wav;audio/mp4;audio/x-m4a;audio/aac;audio/x-aiff;audio/x-ms-wma;audio/x-matroska;audio/webm;
+StartupNotify=true
+StartupWMClass=srhtnin.{Name}

Programs/SaraView/Manifest.toml

@@ -1,25 +1,44 @@
 # Kept in sync between SaraSuite/Programs/SaraView/ and SaraView/Client/Packaging/SaraSuite/.
 Name = "SaraView"
+Platforms = ["Linux", "Windows", "macOS"]
 Description = "SaraView's desktop client: view and edit files in a local folder, or on a SaraView server."
 
 [Source]
 Git = "{GitHost}/SaraView"
 # Only the Flet client; the server (Backend/, Frontend/) runs in Docker on SpineS.
-Include = ["Client/*.py", "Client/requirements.txt", "Client/assets/**"]
+# Backend/VarEngine.py is the variable engine the client shares with it.
+Include = ["Client/*.py", "Client/requirements.txt", "Client/assets/**", "Backend/VarEngine.py"]
 Exclude = ["Client/Packaging"]
 
 [Python]
 RequirementsFile = "Client/requirements.txt"
 
+# Linux: a launcher and a desktop entry.
 [[Templates]]
+Platform = "Linux"
 Source = "Launch.sh"
 Target = "{AppDir}/Client/Packaging/Launch.sh"
 Executable = true
 
 [[Templates]]
+Platform = "Linux"
 Source = "SaraView.desktop"
 Target = "{ApplicationsDir}/SaraView.desktop"
 
+# Windows: a Start Menu shortcut (pythonw.exe Client/Main.py, from the app folder).
+[[Shortcuts]]
+Platform = "Windows"
+Name = "SaraView"
+Script = "Client/Main.py"
+Icon = "Client/assets/Icon.png"
+
+# macOS: an app bundle, ~/Applications/SaraView.app (python Client/Main.py, from the app folder).
+[[Shortcuts]]
+Platform = "macOS"
+Name = "SaraView"
+Script = "Client/Main.py"
+Icon = "Client/assets/Icon.png"
+
 # Made by SaraView itself: Config.toml and Session.toml (your saved login).
 [[Leftovers]]
 Path = "{ConfigDir}"
@@ -33,5 +52,6 @@ Note = "server files downloaded to open in other programs"
 
 # Shared with the other Flet programs; see Programs/FletIdentity.py.
 [[Templates]]
+Platform = "Linux"
 Source = "../../FletIdentity.py"
 Target = "{ProgramDir}/FletIdentity.py"

Programs/SaraView/Templates/Launch.sh

@@ -4,5 +4,9 @@
 # matches the window to {Name}.desktop (StartupWMClass) instead of showing it
 # as "com.appveyor.flet". Empty if that fails: Flet then uses its own client.
 export FLET_VIEW_PATH="$("{Python}" "{ProgramDir}/FletIdentity.py" "srhtnin.{Name}")"
+# Libraries Flet's window needs that this system lacks (libsecret), from
+# SaraSuite: FletIdentity.py puts them beside the client copy.
+Fallback="$FLET_VIEW_PATH/../fallback-libs"
+[ -n "$FLET_VIEW_PATH" ] && [ -d "$Fallback" ] && export LD_LIBRARY_PATH="${LD_LIBRARY_PATH:+$LD_LIBRARY_PATH:}$Fallback"
 cd "{AppDir}/Client" || exit 1
 exec "{Python}" Main.py "$@"

Programs/ServiceRun.py

@@ -0,0 +1,120 @@
+"""Runs a SaraSuite program as a background service where there's no systemd
+--user to do it: on Windows (started windowless with pythonw.exe), on macOS,
+and on Linux with another init system (runit on Void, OpenRC, s6, dinit, ...).
+Started at login (Windows: a shortcut in the Startup folder; macOS: a
+LaunchAgent; Linux: an XDG autostart entry) and when SaraSuite or the program's own GUI (e.g. SaraSort
+for SaraSortd) starts it:
+
+    python ServiceRun.py <Name> <Script> [<WorkingDir>]
+
+Like the systemd unit it stands in for: one copy at a time; restarted 10
+seconds after it fails (an exception or a non-zero exit), not after a clean
+exit or a stop; its output goes to <Name>.log. Its PID is in <Name>.pid, so
+anything can tell whether it runs, and stop it, without admin rights. Both
+files are in SaraSuite's Services folder: %LOCALAPPDATA%\\SaraSuite\\Services
+on Windows, ~/Library/Application Support/SaraSuite/Services on macOS,
+~/.local/share/SaraSuite/Services on Linux.
+
+Installed next to each program that has a service (Programs/<Name>/Manifest.toml).
+"""
+
+import os
+import runpy
+import signal
+import subprocess
+import sys
+import time
+import traceback
+from datetime import datetime
+from pathlib import Path
+
+IsWindows = sys.platform == "win32"
+IsMac = sys.platform == "darwin"
+RestartSeconds = 10  # the unit's RestartSec
+MaxLogBytes = 1_000_000  # then the log starts over, the old one kept as <Name>.log.1
+Stopping = False
+
+
+def ServicesDir() -> Path:
+    if IsWindows:
+        Base = Path(os.environ.get("LOCALAPPDATA") or Path.home() / "AppData" / "Local")
+    elif IsMac:
+        Base = Path.home() / "Library" / "Application Support"
+    else:
+        Base = Path(os.environ.get("XDG_DATA_HOME") or Path.home() / ".local" / "share")
+    return Base / "SaraSuite" / "Services"
+
+
+def _AlreadyRunning(PidFile: Path) -> bool:
+    """Linux and macOS: whether the PID file's process is another
+    ServiceRun.py still running (not a reused PID). Windows relies on whoever
+    starts it to check."""
+    if IsWindows:
+        return False
+    try:
+        Pid = int(PidFile.read_text().strip())
+        if Pid == os.getpid():
+            return False
+        if IsMac:  # no /proc
+            Output = subprocess.run(["ps", "-o", "command=", "-p", str(Pid)], capture_output=True, text=True, timeout=15).stdout
+            return "ServiceRun.py" in Output
+        return b"ServiceRun.py" in Path(f"/proc/{Pid}/cmdline").read_bytes()
+    except (OSError, ValueError, subprocess.SubprocessError):
+        return False
+
+
+def _Stop(Signal, Frame) -> None:
+    global Stopping
+    Stopping = True
+    raise SystemExit(0)
+
+
+def Main() -> None:
+    Name, Script = sys.argv[1], Path(sys.argv[2])
+    if len(sys.argv) > 3:
+        Folder = Path(sys.argv[3])
+        Folder.mkdir(parents=True, exist_ok=True)
+        os.chdir(Folder)
+    Folder = ServicesDir()
+    Folder.mkdir(parents=True, exist_ok=True)
+    # Not an f-string: SaraSuite fills in braced names like that one when it places this file.
+    PidFile = Folder / (Name + ".pid")
+    if _AlreadyRunning(PidFile):
+        return
+
+    LogFile = Folder / (Name + ".log")
+    if LogFile.exists() and LogFile.stat().st_size > MaxLogBytes:
+        LogFile.replace(LogFile.with_suffix(".log.1"))
+    sys.stdout = sys.stderr = open(LogFile, "a", buffering=1, encoding="utf-8", errors="replace")
+
+    PidFile.write_text(str(os.getpid()))
+    if not IsWindows:
+        signal.signal(signal.SIGTERM, _Stop)  # a stop: finish cleanly, don't restart
+    sys.path.insert(0, str(Script.parent))
+    try:
+        while True:
+            print(f"== {datetime.now():%Y-%m-%d %H:%M:%S} starting {Script.name}")
+            try:
+                sys.argv = [str(Script)]
+                runpy.run_path(str(Script), run_name="__main__")
+                break
+            except SystemExit as Exit:
+                if Stopping or Exit.code in (None, 0):
+                    break
+                print(f"== {Script.name} exited with {Exit.code}")
+            except Exception:
+                traceback.print_exc()
+            print(f"== restarting in {RestartSeconds} seconds")
+            time.sleep(RestartSeconds)
+    finally:
+        print(f"== {datetime.now():%Y-%m-%d %H:%M:%S} stopped")
+        # Only remove it if it's still ours (a newer start may have replaced it).
+        try:
+            if PidFile.read_text().strip() == str(os.getpid()):
+                PidFile.unlink()
+        except OSError:
+            pass
+
+
+if __name__ == "__main__":
+    Main()

README.md

@@ -6,7 +6,8 @@ It's one AppImage file: download it, run it, pick a program.
 - **Install**: downloads the program's latest commit from its git repo, copies it into
   `~/.local/share/SaraSuite/Programs/<Name>/` with its own Python venv, places its configs in
   `~/.config/SaraSuite/<Name>/`, and writes its desktop entries, systemd user units, D-Bus
-  services and so on.
+  services and so on. Without systemd (runit on Void, OpenRC, s6, dinit, ...), background
+  services run the way they do on Windows: see the table below.
 - **Update**: shown when the repo has a newer commit. Program files and integration files are
   replaced; configs are *merged*: your edits always win, defaults you never touched follow the
   new version, new keys are added (see `ConfigMerge.py`).
@@ -78,11 +79,60 @@ an option off takes out what it placed and puts back any file it had replaced; t
 places it. It reapplies the installed commit, so the program itself isn't updated. The
 **Update** button only shows up when there's an update (or a broken install to repair).
 
+## Windows and macOS
+
+`SaraSuite.exe` is the Windows version, `SaraSuite-macOS.zip` (SaraSuite.app) the macOS one.
+Each one only lists the programs for its own system (a manifest's
+`Platforms`), and does everything that system's way:
+
+| Linux | Windows | macOS |
+| --- | --- | --- |
+| `~/.config/SaraSuite/` (settings) | `%APPDATA%\SaraSuite\` | `~/Library/Application Support/SaraSuite/` |
+| `~/.local/share/SaraSuite/` (programs, receipts) | `%LOCALAPPDATA%\SaraSuite\` | the same folder as the settings, as Mac apps do |
+| `~/.cache/...` | `%LOCALAPPDATA%\...` | `~/Library/Caches/...` |
+| desktop entry | Start Menu shortcut (`[[Shortcuts]]`) | `~/Applications/<Name>.app`, a small app bundle (`[[Shortcuts]]`) |
+| systemd user service | `ServiceRun.py`, started at login by a shortcut in the Startup folder | `ServiceRun.py`, started at login by a LaunchAgent, `~/Library/LaunchAgents/srhtnin.<Name>.plist` |
+| system `python3` | the `py` launcher / `python.exe`; if there's none, SaraSuite installs Python for the user with winget | a standalone Python that uv installs into SaraSuite's own folder (`Python/`, uv itself in `Tools/`); no admin, Homebrew or Xcode tools |
+| AppImage self-update (rename over it) | `.exe` self-update (the running one is renamed to `SaraSuite.old.exe`, deleted on the next start) | `SaraSuite-macOS.zip` self-update (unpacked next to `SaraSuite.app`, then swapped in) |
+
+A service run by `ServiceRun.py` restarts 10 seconds after it fails, like the unit's
+`Restart=on-failure`, and keeps its output in SaraSuite's `Services/<Name>.log`, its PID next to it
+in `<Name>.pid` (that's how SaraSuite and SaraSort tell it runs, and stop it).
+
+Linux without systemd (no `/run/systemd/system`: runit on Void, OpenRC, s6, dinit, ...) runs
+services the same way (`Services.py`), started at login by an XDG autostart entry,
+`~/.config/autostart/<Name>.desktop`, which desktop sessions start whatever the init system is.
+Units aren't written there, and `RestartUnits` stops the process instead (D-Bus starts
+`xdg-desktop-portal` again when it's needed). A window manager that doesn't run XDG autostart
+entries needs to start them itself (e.g. `dex -a` in its startup config).
+
+Programs run on Windows with `pythonw.exe -X utf8` (no console window; UTF-8 mode, since Python
+on Windows otherwise reads text files in the old ANSI code page). Nothing needs admin rights on
+either system. Linux-only features (SaraFem's file picker portal and default-file-manager option)
+simply aren't offered there, and on macOS SaraTune has no media keys (see its README).
+
+macOS is written but not tested on a real Mac yet (Apple Silicon only). Things to know there:
+- SaraSortd sorting `~/Downloads`, `~/Documents` or `~/Desktop` needs permission: macOS asks the
+  first time, or the Python in `~/Library/Application Support/SaraSuite/Python/` can be given
+  Full Disk Access in System Settings > Privacy & Security.
+- A program's Dock icon is the Flet client's, not its own; its app bundle in `~/Applications`
+  (what Launchpad and Spotlight show) has the right one.
+
 ## Running and building
 
 - AppImage: `Packaging/BuildAppImage.sh` builds `dist/SaraSuite-x86_64.AppImage`
   (PyInstaller one-file build + `appimagetool`, like SaraFem's). When run as an AppImage,
   the header has an "Add to app menu" button.
+- Windows: `Packaging/BuildExe.sh` builds `dist/SaraSuite.exe` with the Windows Python inside a
+  Wine prefix (`build/WinBuild/`, set up on its first run), since PyInstaller can't build for
+  Windows from Linux directly. The .exe's header has an "Add to Start menu" button.
+- macOS: `Packaging/BuildMacApp.py` puts `dist/SaraSuite-macOS.zip` together on Linux, since
+  PyInstaller can only build a Mac app on a Mac: a standalone Mac Python
+  (python-build-standalone), SaraSuite's requirements as macOS wheels, the Flet client for macOS
+  and SaraSuite's code, run by a shell-script launcher (which sets `SARASUITE_APP`, so SaraSuite
+  knows it's packaged). It isn't signed with an Apple developer account, so the first start needs
+  System Settings > Privacy & Security > Open Anyway; the launcher then clears the download
+  quarantine from the whole app. It has to be moved out of Downloads (into Applications) first.
 - From source: `python3 -m venv .venv && .venv/bin/pip install -r requirements.txt`, then
   `Packaging/Launch.sh`.
 - Without a desktop (e.g. a server), the same file works from a terminal:
@@ -98,6 +148,8 @@ places it. It reapplies the installed commit, so the program itself isn't update
 
 ## Where things live
 
+On Linux (on Windows and macOS, the same layout in their own folders; see Windows and macOS above):
+
 | Path | What |
 | --- | --- |
 | `~/.local/share/SaraSuite/Programs/<Name>/` | installed program (`App/`) and its `.venv/` |
@@ -115,13 +167,23 @@ Manifests are bundled into the AppImage, so a new or changed manifest means rebu
 Anything the manifest can't describe goes in an optional `Programs/<Name>/Hooks.py`.
 
 Targets, templates and `Set` values can use `{Variables}`: `Name`, `GitHost`, `Home`, `ConfigHome`,
-`DataHome`, `CacheHome`, `SystemdUserDir`, `ApplicationsDir`, `DBusServicesDir`, `ProgramDir`,
-`AppDir`, `Python` (the venv's python), `ConfigDir`, `DesktopName` (e.g. `COSMIC`),
-`Desktop` (e.g. `cosmic`), plus every Question's `Id`.
+`DataHome`, `CacheHome`, `ProgramDir`, `AppDir`, `Python` (the venv's python), `PythonW`
+(Windows: its console-less pythonw.exe), `ConfigDir`, `DesktopName` (e.g. `COSMIC`),
+`Desktop` (e.g. `cosmic`), plus every Question's `Id`. Linux only: `PortalsDir` (your own xdg-desktop-portal folder where it's 1.17+, else
+`/usr/share/...`), `PortalsConf` (`<desktop>-portals.conf`, or `portals.conf` without a desktop name),
+`DesktopPortal` (`<desktop>;` or nothing), `SystemdUserDir`,
+`ApplicationsDir`, `DBusServicesDir`. Windows only: `StartMenuDir`, `StartupDir`. macOS only:
+`ApplicationsDir` (`~/Applications`), `LaunchAgentsDir`.
+
+Every list item (`[[Options]]`, `[[Templates]]`, `[[Services]]`, ...) can carry
+`Platform = "Linux"`, `"Windows"` or `"macOS"` to only apply on that system; items without one apply everywhere.
+In TOML templates, write paths as literal strings (`'{ConfigDir}'`): Windows paths are full of
+backslashes, which a `"..."` string would read as escapes.
 
 ```toml
 Name = "Example"
 Description = "Shown on the program's card."
+Platforms = ["Linux", "Windows", "macOS"]  # where it runs (default ["Linux"])
 Parent = "SaraSortd"            # optional: listed (indented) under that program
 RestartUnits = ["xdg-desktop-portal.service"]  # try-restarted after install/update/remove
 
@@ -158,13 +220,34 @@ Set = { "Paths.RootDir" = "{RootDir}" }
 Source = "Example.service"     # in Templates/
 Target = "{SystemdUserDir}/Example.service"
 Option = "Autostart"           # optional: only while the option is ticked
-Root = false                   # true: outside $HOME, written through pkexec
+Root = false                   # true: outside $HOME, through pkexec; "Auto": only if Target is
+                               # outside $HOME once rendered (e.g. {PortalsDir})
 Executable = false
 
-[[Services]]                   # systemd --user units, enabled + started
-Unit = "Example.service"
+[[Services]]                   # Linux: a systemd --user unit, enabled + started; without
+Platform = "Linux"             # systemd, Name/Script/WorkingDir run by ServiceRun.py instead,
+Unit = "Example.service"       # started at login by an autostart entry
+Name = "Example"
+Script = "Example.py"
+WorkingDir = "{ConfigDir}"
 Option = "Autostart"
 
+[[Services]]                   # Windows: run by ServiceRun.py from a Startup-folder shortcut
+Platform = "Windows"           # (macOS: the same with Platform = "macOS", from a LaunchAgent;
+                               # both: add ../../ServiceRun.py as a Template to {ProgramDir})
+Name = "Example"
+Script = "Example.py"          # relative to the app folder
+WorkingDir = "{ConfigDir}"
+Option = "Autostart"
+
+[[Shortcuts]]                  # Windows: a Start Menu shortcut (pythonw.exe -X utf8 Script)
+Platform = "Windows"
+Name = "Example"
+Script = "Main.py"             # relative to the app folder, which is also its working folder
+Icon = "assets/Icon.png"       # turned into an .ico
+                               # macOS: the same with Platform = "macOS" makes ~/Applications/<Name>.app
+                               # (the venv's python Script; the icon becomes an .icns)
+
 [[IniEdits]]                   # one key in a file SaraSuite doesn't own; restored on removal
 File = "{ConfigHome}/mimeapps.list"
 Section = "Default Applications"

SelfUpdate.py

@@ -1,24 +1,33 @@
 """SaraSuite updating itself from its Gitea releases.
 
 Packaging/Release.py publishes a release (tag v<AppVersion>) with the
-AppImage attached. Here SaraSuite asks Gitea for the latest release, and if
-it's newer than AppVersion and SaraSuite runs as an AppImage, downloads it
-next to the running one and renames it into place (allowed while it's
-running), then restarts into it. The AppImage keeps its path, so its app
-menu entry keeps working.
+AppImage and SaraSuite.exe attached (and SaraSuite-macOS.zip, once there's
+a Mac build). Here SaraSuite asks Gitea for the latest
+release, and if it's newer than AppVersion and SaraSuite runs packaged
+(AppImage / .exe), downloads its own platform's file and swaps it in, then
+restarts into it. The file keeps its path, so its menu entry keeps working.
+- Linux: the download is renamed over the running AppImage (allowed).
+- Windows: a running .exe can't be overwritten but can be renamed, so the
+  old one becomes SaraSuite.old.exe (deleted on the next start).
+- macOS: SaraSuite.app (a folder, Packaging/BuildMacApp.py) comes zipped; it's
+  unpacked next to the running one, which is renamed aside and deleted once
+  the new one is in place.
 """
 
 import os
+import shutil
 import subprocess
+import tempfile
+import sys
 from dataclasses import dataclass
 from pathlib import Path
 from typing import Callable, Optional
 from urllib.parse import urlsplit
 
-from Core import AppName, AppVersion, ChildEnvironment, LoadConfig
+from Core import AppName, AppVersion, ChildEnvironment, IsFrozen, IsMac, IsWindows, LoadConfig, MacApp
 from Sources import GetBytes, GetJson, SourceError
 
-AssetName = f"{AppName}-x86_64.AppImage"
+AssetName = f"{AppName}.exe" if IsWindows else f"{AppName}-macOS.zip" if IsMac else f"{AppName}-x86_64.AppImage"
 
 
 @dataclass
@@ -28,10 +37,43 @@ class Release:
 
 
 def RunningAppImage() -> Optional[Path]:
+    """The packaged SaraSuite file that's running: the AppImage on Linux, the
+    .exe on Windows, the SaraSuite.app bundle on macOS. None when running
+    from source."""
+    if IsWindows:
+        return Path(sys.executable) if IsFrozen else None
+    if IsMac:
+        return Path(MacApp) if MacApp.endswith(".app") else None
     Value = os.environ.get("APPIMAGE", "")
     return Path(Value) if Value else None
 
 
+def CleanUpOldExe() -> None:
+    """Windows: delete the .exe a previous update renamed aside."""
+    Running = RunningAppImage()
+    if IsWindows and Running is not None:
+        Running.with_name(f"{Running.stem}.old.exe").unlink(missing_ok=True)
+
+
+def _InstallMacBundle(Target: Path, Data: bytes) -> None:
+    """Unpack the zipped SaraSuite.app next to the running one (same volume,
+    so the renames are instant), then swap the two. ditto keeps what a Mac
+    app needs: permissions, symlinks inside its frameworks, its signature."""
+    with tempfile.TemporaryDirectory(dir=Target.parent, prefix=".SaraSuite-update-") as Temporary:
+        Archive = Path(Temporary) / AssetName
+        Archive.write_bytes(Data)
+        Unpacked = Path(Temporary) / "Unpacked"
+        subprocess.run(["ditto", "-x", "-k", str(Archive), str(Unpacked)], check=True, capture_output=True)
+        New = next(Unpacked.glob("*.app"), None)
+        if New is None:
+            raise OSError(f"{AssetName} has no app in it; leaving the current one alone.")
+        Old = Target.with_name(f"{Target.stem}.old.app")
+        shutil.rmtree(Old, ignore_errors=True)
+        Target.rename(Old)
+        New.rename(Target)
+        shutil.rmtree(Old, ignore_errors=True)
+
+
 def _VersionTuple(Version: str) -> tuple[int, ...]:
     Parts = []
     for Part in Version.strip().lstrip("vV").split("."):
@@ -56,7 +98,12 @@ def LatestRelease() -> Optional[Release]:
     except SourceError:
         return None
     Asset = next((Item for Item in Data.get("assets", []) if Item.get("name") == AssetName), None)
-    return Release(Data.get("tag_name", ""), Asset.get("browser_download_url", "") if Asset else "")
+    AssetUrl = Asset.get("browser_download_url", "") if Asset else ""
+    # Gitea can hand out http:// download links; never fetch an executable
+    # over plain HTTP when the git host itself is HTTPS.
+    if Parts.scheme == "https" and AssetUrl.startswith("http://"):
+        AssetUrl = "https://" + AssetUrl.removeprefix("http://")
+    return Release(Data.get("tag_name", ""), AssetUrl)
 
 
 def Install(Latest: Release, Log: Callable[[str], None]) -> Path:
@@ -69,14 +116,28 @@ def Install(Latest: Release, Log: Callable[[str], None]) -> Path:
     Log(f"== Updating {AppName} {AppVersion} -> {Latest.Version.lstrip('v')}")
     Log(f"Downloading {Latest.AssetUrl}")
     Data = GetBytes(Latest.AssetUrl)
-    if not Data.startswith(b"\x7fELF"):
-        raise OSError("The download isn't an AppImage; leaving the current one alone.")
-    # Same folder, so the rename is atomic; renaming over a running AppImage
-    # is fine (overwriting it in place isn't: "Text file busy").
+    if not Data.startswith(b"MZ" if IsWindows else b"PK" if IsMac else b"\x7fELF"):
+        raise OSError(f"The download isn't a {AssetName}; leaving the current one alone.")
+    if IsMac:
+        try:
+            _InstallMacBundle(Target, Data)
+        except subprocess.CalledProcessError as Error:
+            raise OSError(f"Couldn't unpack {AssetName}: {Error.stderr.decode(errors='replace').strip()}") from Error
+        Log(f"== {AppName} updated; it's the new version from the next start")
+        return Target
     Temporary = Target.with_name(Target.name + ".new")
     Temporary.write_bytes(Data)
-    Temporary.chmod(0o755)
-    Temporary.replace(Target)
+    if IsWindows:
+        # A running .exe can't be replaced, but it can be renamed out of the way.
+        Old = Target.with_name(f"{Target.stem}.old.exe")
+        Old.unlink(missing_ok=True)
+        Target.rename(Old)
+        Temporary.rename(Target)
+    else:
+        # Same folder, so the rename is atomic; renaming over a running AppImage
+        # is fine (overwriting it in place isn't: "Text file busy").
+        Temporary.chmod(0o755)
+        Temporary.replace(Target)
     Log(f"== {AppName} updated; it's the new version from the next start")
     return Target
 
@@ -87,7 +148,15 @@ def Restart() -> None:
     if Target is None:
         return
     Environment = ChildEnvironment()
-    for Key in ("APPIMAGE", "APPDIR", "ARGV0", "OWD"):  # the new AppImage sets its own
-        Environment.pop(Key, None)
-    subprocess.Popen([str(Target)], env=Environment, start_new_session=True,
-                     stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
+    for Key in ("APPIMAGE", "APPDIR", "ARGV0", "OWD", "_MEIPASS2", "_PYI_APPLICATION_HOME_DIR"):
+        Environment.pop(Key, None)  # the new one sets its own
+    if IsMac:
+        # -n: a new instance, even though this one is still running.
+        subprocess.Popen(["open", "-n", str(Target)], env=Environment, start_new_session=True)
+    elif IsWindows:
+        Environment["PYINSTALLER_RESET_ENVIRONMENT"] = "1"  # a fresh onefile unpack, not ours
+        subprocess.Popen([str(Target)], env=Environment, close_fds=True,
+                         creationflags=getattr(subprocess, "DETACHED_PROCESS", 0))
+    else:
+        subprocess.Popen([str(Target)], env=Environment, start_new_session=True,
+                         stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)

Services.py

@@ -0,0 +1,130 @@
+"""Background services SaraSuite runs itself, where there's no systemd --user
+to do it: Windows, macOS, and Linux with another init system (runit on Void, OpenRC,
+s6, dinit, ...). Each runs as Programs/ServiceRun.py <Name> <Script>
+<WorkingDir>, which keeps it going (restarts it if it fails), logs its output
+and records its PID, all in ServicesDir. At login it's started by
+- Windows: a shortcut in the Startup folder;
+- macOS: a LaunchAgent (~/Library/LaunchAgents/srhtnin.<Name>.plist);
+- Linux: an XDG autostart entry (~/.config/autostart/<Name>.desktop), which
+  desktop sessions start whatever the init system is.
+The installer places those (Installer._ApplyStandInServices); this starts,
+stops and checks the services. SaraSort's Service.py does the same for SaraSortd.
+"""
+
+import os
+import re
+import signal
+import subprocess
+import time
+from pathlib import Path
+from typing import Callable, Optional
+
+from Core import ChildEnvironment, IsMac, IsWindows, ServicesDir
+
+LogFn = Callable[[str], None]
+
+# Windows: child processes of a windowed program would each flash a console window.
+NoWindow = getattr(subprocess, "CREATE_NO_WINDOW", 0)
+_Detached = getattr(subprocess, "DETACHED_PROCESS", 0) | getattr(subprocess, "CREATE_NEW_PROCESS_GROUP", 0)
+
+
+def _PidFile(Name: str) -> Path:
+    return ServicesDir / f"{Name}.pid"
+
+
+def LogFile(Name: str) -> Path:
+    return ServicesDir / f"{Name}.log"
+
+
+def ServicePid(Name: str) -> Optional[int]:
+    """The PID ServiceRun.py recorded, if that process is still it."""
+    try:
+        Pid = int(_PidFile(Name).read_text().strip())
+    except (OSError, ValueError):
+        return None
+    if IsMac:  # no /proc: ask ps for its command line
+        try:
+            Output = subprocess.run(["ps", "-o", "command=", "-p", str(Pid)], capture_output=True, text=True, timeout=15).stdout
+        except (OSError, subprocess.SubprocessError):
+            return None
+        return Pid if "ServiceRun.py" in Output else None
+    if not IsWindows:
+        try:
+            return Pid if b"ServiceRun.py" in Path(f"/proc/{Pid}/cmdline").read_bytes() else None
+        except OSError:
+            return None
+    try:
+        Output = subprocess.run(
+            ["tasklist", "/FI", f"PID eq {Pid}", "/NH", "/FO", "CSV"],
+            capture_output=True, text=True, timeout=15, creationflags=NoWindow,
+        ).stdout
+    except (OSError, subprocess.SubprocessError):
+        return None
+    return Pid if re.search(rf'"{Pid}"', Output) else None
+
+
+def Command(Python: Path, Runner: Path, Name: str, Script: Path, WorkingDir: Path) -> list[str]:
+    """What runs the service (Python: pythonw.exe on Windows)."""
+    return [str(Python), str(Runner), Name, str(Script), str(WorkingDir)]
+
+
+def Start(Name: str, Python: Path, Runner: Path, Script: Path, WorkingDir: Path, Log: LogFn) -> None:
+    """Start a service now (it also starts at every login, the same way)."""
+    if ServicePid(Name) is not None:
+        Log(f"{Name} is already running")
+        return
+    WorkingDir.mkdir(parents=True, exist_ok=True)
+    Extra = {"creationflags": _Detached | NoWindow} if IsWindows else {"start_new_session": True}
+    subprocess.Popen(
+        Command(Python, Runner, Name, Script, WorkingDir), cwd=str(WorkingDir), env=ChildEnvironment(),
+        close_fds=True, stdin=subprocess.DEVNULL, stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL, **Extra,
+    )
+    Log(f"Started {Name}")
+
+
+def Stop(Name: str, Log: LogFn) -> None:
+    Pid = ServicePid(Name)
+    if Pid is not None:
+        if IsWindows:
+            subprocess.run(["taskkill", "/PID", str(Pid), "/T", "/F"], capture_output=True, creationflags=NoWindow)
+        else:
+            # ServiceRun.py finishes cleanly on SIGTERM; one that hangs is killed.
+            os.kill(Pid, signal.SIGTERM)
+            for _ in range(50):
+                if ServicePid(Name) is None:
+                    break
+                time.sleep(0.2)
+            else:
+                os.kill(Pid, signal.SIGKILL)
+        Log(f"Stopped {Name}")
+    _PidFile(Name).unlink(missing_ok=True)
+
+
+def Restart(Name: str, Python: Path, Runner: Path, Script: Path, WorkingDir: Path, Log: LogFn) -> None:
+    Stop(Name, Log)
+    Start(Name, Python, Runner, Script, WorkingDir, Log)
+
+
+def _ExecArgument(Text: str) -> str:
+    """One argument for a desktop entry's Exec key (the spec's quoting)."""
+    Text = Text.replace("%", "%%")
+    if re.fullmatch(r"[\w@%+=:,./-]+", Text):
+        return Text
+    return '"' + re.sub(r'(["`$\\])', r"\\\1", Text) + '"'
+
+
+def AutostartEntry(Name: str, Python: Path, Runner: Path, Script: Path, WorkingDir: Path) -> str:
+    """Linux: the XDG autostart entry that starts the service at login."""
+    Exec = " ".join(_ExecArgument(Part) for Part in Command(Python, Runner, Name, Script, WorkingDir))
+    return (
+        "# Written by SaraSuite: starts this background service at login on systems\n"
+        "# without systemd (runit, OpenRC, s6, ...). Removed with the program.\n"
+        "[Desktop Entry]\n"
+        "Type=Application\n"
+        f"Name={Name}\n"
+        f"Comment={Name} (background service, run by SaraSuite)\n"
+        f"Exec={Exec}\n"
+        "Terminal=false\n"
+        "NoDisplay=true\n"
+        "X-GNOME-Autostart-enabled=true\n"
+    )

Settings.py

@@ -8,8 +8,8 @@ from typing import Callable
 import flet as ft
 
 from Core import (
-    AppConfig, BundledFontFamily, ChildEnvironment, ChipButtonStyle, LoadSharedSettings, Palette,
-    SharedSettings, ThemesDir,
+    AppConfig, BundledFontFamily, ChildEnvironment, ChipButtonStyle, EnsureSharedThemes, IsMac, IsWindows,
+    LoadSharedSettings, Palette, SharedConfigPath, SharedSettings, ThemesDir,
 )
 from Installer import DefaultAnswers, DefaultOptions
 from Manifests import Program
@@ -25,13 +25,24 @@ def _Note(Text: str) -> ft.Text:
 
 
 def _Themes() -> list[str]:
+    EnsureSharedThemes()
     Names = {Path.stem for Path in ThemesDir.glob("*.toml")} if ThemesDir.is_dir() else set()
-    Names.add("CatppuccinMocha")  # built in, even before SaraFem seeds the folder
+    Names.add("CatppuccinMocha")  # built in, even where the folder can't be written
     return sorted(Names)
 
 
 def _Fonts() -> list[str]:
-    """Installed font families (fontconfig), with the bundled font first."""
+    """Installed font families (fontconfig, the registry on Windows, the font
+    files themselves on macOS), with the bundled font first."""
+    if IsWindows or IsMac:
+        if IsMac:
+            import MacSupport as Support
+        else:
+            import WindowsSupport as Support
+
+        Families = Support.FontFamilies()
+        Families.discard(BundledFontFamily)
+        return [BundledFontFamily] + sorted(Families, key=str.lower)
     try:
         Result = subprocess.run(
             ["fc-list", ":", "family"], capture_output=True, text=True, timeout=5, env=ChildEnvironment(),
@@ -90,7 +101,7 @@ def ShowSettingsDialog(Page: ft.Page, Config: AppConfig, Programs: list[Program]
     Categories: dict[str, ft.Control] = {
         "Shared": ft.Column(
             [
-                _Note("Shared by every SaraSuite program (~/.config/SaraSuite/Config.toml)."),
+                _Note(f"Shared by every SaraSuite program ({SharedConfigPath})."),
                 UseSharedSwitch,
                 ft.Divider(height=1, color=Palette.Surface1),
                 SharedTheme,

WindowsSupport.py

@@ -0,0 +1,147 @@
+"""Windows stand-ins for what SaraSuite uses on Linux:
+
+    Linux                               Windows
+    .desktop entry                      Start Menu shortcut (.lnk)
+    systemd --user service              shortcut in the Startup folder, started and stopped
+                                        through Programs/ServiceRun.py (Services.py)
+    system python3                      the py launcher / python.exe, else winget installs it
+    fc-list                             the Fonts registry key
+
+Only imported on Windows (pylnk3, winreg).
+"""
+
+import os
+import re
+import shutil
+import subprocess
+from pathlib import Path
+from typing import Callable, Optional
+
+from Core import DataHome
+
+LogFn = Callable[[str], None]
+
+# Child processes of a windowed program would each flash a console window.
+NoWindow = getattr(subprocess, "CREATE_NO_WINDOW", 0)
+
+PythonVersion = "3.14"  # what winget installs when there's no Python yet
+_WingetId = f"Python.Python.{PythonVersion}"
+
+
+# --- Shortcuts and icons ---------------------------------------------------------------
+
+
+def MakeIcon(Png: Path, Ico: Path) -> Optional[Path]:
+    """A .ico from one of the Sara icons (32x32 pixel art stored at 10x).
+    Each size is a whole multiple of the 32x32 grid, so every art pixel
+    stays square and crisp (same reasoning as the cards' 128px icons)."""
+    try:
+        from PIL import Image
+
+        Source = Image.open(Png).convert("RGBA")
+        Grid = Source.resize((32, 32), Image.NEAREST)
+        Sizes = [(Size, Size) for Size in (256, 128, 64, 32, 16)]
+        Ico.parent.mkdir(parents=True, exist_ok=True)
+        Grid.resize((256, 256), Image.NEAREST).save(Ico, format="ICO", sizes=Sizes)
+        return Ico
+    except Exception:
+        return None
+
+
+def CreateShortcut(
+    Link: Path, Target: Path, Arguments: str = "", WorkingDir: Optional[Path] = None,
+    Icon: Optional[Path] = None, Description: str = "",
+) -> None:
+    import pylnk3
+
+    Link.parent.mkdir(parents=True, exist_ok=True)
+    pylnk3.for_file(
+        str(Target), str(Link), arguments=Arguments or None, description=Description or None,
+        icon_file=str(Icon) if Icon else None, icon_index=0,
+        work_dir=str(WorkingDir) if WorkingDir else None,
+    )
+
+
+# --- Python -------------------------------------------------------------------------------
+
+
+def _Usable(Candidate: str) -> bool:
+    # The "python.exe" in WindowsApps is only a stub that opens the Microsoft Store.
+    return bool(Candidate) and "WindowsApps" not in Candidate and Path(Candidate).is_file()
+
+
+def FindPython() -> Optional[str]:
+    """A real Python 3 to build program venvs from."""
+    Launcher = shutil.which("py")
+    if Launcher:
+        try:
+            Result = subprocess.run(
+                [Launcher, "-3", "-c", "import sys; print(sys.executable)"],
+                capture_output=True, text=True, timeout=30, creationflags=NoWindow,
+            )
+            if _Usable(Result.stdout.strip()):
+                return Result.stdout.strip()
+        except (OSError, subprocess.SubprocessError):
+            pass
+    for Name in ("python3", "python"):
+        Found = shutil.which(Name) or ""
+        if _Usable(Found):
+            return Found
+    # Per-user installs from python.org or winget, newest first.
+    Installed = sorted((DataHome / "Programs" / "Python").glob("Python3*/python.exe"), reverse=True)
+    return str(Installed[0]) if Installed else None
+
+
+def InstallPython(Log: LogFn) -> Optional[str]:
+    """Install the official Python for the current user with winget (built
+    into Windows 10/11; no admin needed with --scope user)."""
+    Winget = shutil.which("winget")
+    if Winget is None:
+        Log("winget isn't available. Install Python from https://www.python.org/downloads/ and try again.")
+        return None
+    Log(f"Python not found; installing Python {PythonVersion} with winget (just for you, no admin)")
+    Command = [
+        Winget, "install", "--id", _WingetId, "--exact", "--scope", "user", "--silent",
+        "--accept-package-agreements", "--accept-source-agreements",
+    ]
+    Log(f"$ {' '.join(Command)}")
+    Process = subprocess.Popen(Command, stdout=subprocess.PIPE, stderr=subprocess.STDOUT, text=True,
+                               creationflags=NoWindow, errors="replace")
+    for Line in Process.stdout:
+        if Line.strip():
+            Log(f"  {Line.rstrip()}")
+    Process.wait()
+    return FindPython()
+
+
+# --- Fonts -----------------------------------------------------------------------------------
+
+
+def FontFamilies() -> set[str]:
+    """Installed font families, from the system and per-user Fonts keys
+    ("Arial Bold (TrueType)" -> "Arial")."""
+    import winreg
+
+    Families: set[str] = set()
+    Key = r"SOFTWARE\Microsoft\Windows NT\CurrentVersion\Fonts"
+    for Root in (winreg.HKEY_LOCAL_MACHINE, winreg.HKEY_CURRENT_USER):
+        try:
+            with winreg.OpenKey(Root, Key) as Fonts:
+                Index = 0
+                while True:
+                    try:
+                        Name = winreg.EnumValue(Fonts, Index)[0]
+                    except OSError:
+                        break
+                    Index += 1
+                    Name = re.sub(r"\s*\(.*\)$", "", Name)
+                    Name = re.sub(r"\s+(Bold|Italic|Light|Semibold|SemiBold|Black|Regular|Medium|Thin)\b.*$", "", Name)
+                    if Name and "&" not in Name:
+                        Families.add(Name.strip())
+        except OSError:
+            continue
+    return Families
+
+
+def OpenPath(Target: Path) -> None:
+    os.startfile(str(Target))  # type: ignore[attr-defined]  # Windows only

requirements.txt

@@ -1,2 +1,4 @@
 flet>=1.0,<2.0
 tomlkit
+# macOS: app bundle icons (.icns); the Windows build bundles it for .ico.
+pillow; sys_platform == "darwin"