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From: James Addison <jay@jp-hosting.net>
Date: Tue, 01 Apr 2025 09:17:28 +0000
Subject: Raise import error if PyGObject module is empty
.
When GI overrides are installed, the dist-packages/gi directory is
non-empty, and this allows Python3 to import the module. This can
happen when Debian packages other than python3-gi are installed.
.
Detect an empty __file__ attribute on the imported module to check
whether it is genuinely the expected GObject Python module.
.
Credit to Francesco Ballarin for the test condition in #1101565.
Bug: http://bugs.debian.org/1101565
---
--- a/lib/matplotlib/backends/backend_gtk3.py
+++ b/lib/matplotlib/backends/backend_gtk3.py
@@ -11,6 +11,9 @@
try:
import gi
+
+ if gi.__file__ is None:
+ raise ImportError("Error: PyGObject module is empty")
except ImportError as err:
raise ImportError("The GTK3 backends require PyGObject") from err
--- a/lib/matplotlib/backends/backend_gtk4.py
+++ b/lib/matplotlib/backends/backend_gtk4.py
@@ -10,6 +10,9 @@
try:
import gi
+
+ if gi.__file__ is None:
+ raise ImportError("Error: PyGObject module is empty")
except ImportError as err:
raise ImportError("The GTK4 backends require PyGObject") from err
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