From 918f7ee93bdf25ec7b8dbf2220fb05d3f304a885 Mon Sep 17 00:00:00 2001
From: LangQi99 <2032771946@qq.com>
Date: Tue, 9 Sep 2025 10:05:46 +0800
Subject: [PATCH 1/2] fix import warning

---
 lib/matplotlib/backends/backend_gtk3.py | 2 ++
 lib/matplotlib/backends/backend_gtk4.py | 2 ++
 2 files changed, 4 insertions(+)

diff --git a/lib/matplotlib/backends/backend_gtk3.py b/lib/matplotlib/backends/backend_gtk3.py
index 888f5a770f5d..38c1541b8df1 100644
--- a/lib/matplotlib/backends/backend_gtk3.py
+++ b/lib/matplotlib/backends/backend_gtk3.py
@@ -18,6 +18,8 @@
     # :raises ValueError: If module/version is already loaded, already
     # required, or unavailable.
     gi.require_version("Gtk", "3.0")
+    # Also require GioUnix to avoid PyGIWarning when Gio is imported
+    gi.require_version("GioUnix", "2.0")
 except ValueError as e:
     # in this case we want to re-raise as ImportError so the
     # auto-backend selection logic correctly skips.
diff --git a/lib/matplotlib/backends/backend_gtk4.py b/lib/matplotlib/backends/backend_gtk4.py
index cd38968779ed..ec45c1f5b205 100644
--- a/lib/matplotlib/backends/backend_gtk4.py
+++ b/lib/matplotlib/backends/backend_gtk4.py
@@ -17,6 +17,8 @@
     # :raises ValueError: If module/version is already loaded, already
     # required, or unavailable.
     gi.require_version("Gtk", "4.0")
+    # Also require GioUnix to avoid PyGIWarning when Gio is imported
+    gi.require_version("GioUnix", "2.0")
 except ValueError as e:
     # in this case we want to re-raise as ImportError so the
     # auto-backend selection logic correctly skips.

From 2bef93f32f15fcfad77de3c8530731d84f7516cf Mon Sep 17 00:00:00 2001
From: LangQi99 <2032771946@qq.com>
Date: Tue, 9 Sep 2025 10:33:53 +0800
Subject: [PATCH 2/2] fix

---
 lib/matplotlib/backends/backend_gtk3.py | 7 ++++++-
 lib/matplotlib/backends/backend_gtk4.py | 7 ++++++-
 2 files changed, 12 insertions(+), 2 deletions(-)

diff --git a/lib/matplotlib/backends/backend_gtk3.py b/lib/matplotlib/backends/backend_gtk3.py
index 38c1541b8df1..4e05119aa0f6 100644
--- a/lib/matplotlib/backends/backend_gtk3.py
+++ b/lib/matplotlib/backends/backend_gtk3.py
@@ -19,7 +19,12 @@
     # required, or unavailable.
     gi.require_version("Gtk", "3.0")
     # Also require GioUnix to avoid PyGIWarning when Gio is imported
-    gi.require_version("GioUnix", "2.0")
+    # GioUnix is platform-specific and may not be available on all systems
+    try:
+        gi.require_version("GioUnix", "2.0")
+    except ValueError:
+        # GioUnix is not available on this platform, which is fine
+        pass
 except ValueError as e:
     # in this case we want to re-raise as ImportError so the
     # auto-backend selection logic correctly skips.
diff --git a/lib/matplotlib/backends/backend_gtk4.py b/lib/matplotlib/backends/backend_gtk4.py
index ec45c1f5b205..a45fa0bc490f 100644
--- a/lib/matplotlib/backends/backend_gtk4.py
+++ b/lib/matplotlib/backends/backend_gtk4.py
@@ -18,7 +18,12 @@
     # required, or unavailable.
     gi.require_version("Gtk", "4.0")
     # Also require GioUnix to avoid PyGIWarning when Gio is imported
-    gi.require_version("GioUnix", "2.0")
+    # GioUnix is platform-specific and may not be available on all systems
+    try:
+        gi.require_version("GioUnix", "2.0")
+    except ValueError:
+        # GioUnix is not available on this platform, which is fine
+        pass
 except ValueError as e:
     # in this case we want to re-raise as ImportError so the
     # auto-backend selection logic correctly skips.