The qt5 and qt6 recipes used dodge logic to check if Qt itself is in …

…the python package

The new logic at least avoids a duplicate copy of Qt with
the PyPI copy of PyQt5 and PyQt6.

doc/changelog.rst

@@ -4,6 +4,10 @@ Release history
 py2app 0.28
 -----------
 
+* The qt5 and qt6 recipes used dodge logic to detect
+  if the Qt library itself is inside the python package,
+  resulting in duplicate copies of Qt.
+
 * #406: Fix incompatibility with python 2.7
 
   py2app 0.24 accidently broke compatibility with Python 2.7, and

py2app/recipes/qt5.py

@@ -36,7 +36,7 @@ def check(cmd, mf):
 
 
         qtdir = QLibraryInfo.location(QLibraryInfo.LibrariesPath)
-        if qtdir != os.path.dirname(PyQt5.__file__):
+        if os.path.relpath(qtdir, os.path.dirname(PyQt5.__file__)).startswith("../"):
             # Qt5's prefix is not the PyQt5 package, which means
             # the "packages" directive below won't include everything
             # needed, and in particular won't include the plugins

py2app/recipes/qt6.py

@@ -25,7 +25,7 @@ def check(cmd, mf):
             return None
 
         qtdir = QLibraryInfo.path(QLibraryInfo.LibraryPath.LibrariesPath)
-        if qtdir != os.path.dirname(PyQt6.__file__):
+        if os.path.relpath(qtdir, os.path.dirname(PyQt6.__file__)).startswith("../"):
             # Qt6's prefix is not the PyQt6 package, which means
             # the "packages" directive below won't include everything
             # needed, and in particular won't include the plugins