Bundle libsecret for systems without it

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

Packaging/RestoreLibraryPath.py

@@ -3,9 +3,45 @@
 # 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
 
-if "LD_LIBRARY_PATH_ORIG" in os.environ:
-    os.environ["LD_LIBRARY_PATH"] = os.environ["LD_LIBRARY_PATH_ORIG"]
+
+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)