update linux package installs

Author: ahmad-ajmal

.github/workflows/release.yml

@@ -104,14 +104,18 @@ jobs:
         if: matrix.os_label == 'linux'
         shell: bash
         run: |
-          # PyGObject builds against these headers. WebKitGTK + the
-          # webkit2-4.0 GObject introspection bindings are what pywebview's
-          # GTK backend talks to at runtime. End users need the runtime
-          # halves of these too (libwebkit2gtk-4.0-37, gir1.2-webkit2-4.0).
+          # PyGObject builds against these headers. WebKitGTK 4.1 + the
+          # webkit2-4.1 GObject introspection bindings are what pywebview's
+          # GTK backend talks to at runtime — the WebKit2 namespace is
+          # identical across 4.0 and 4.1, so pywebview needs no change.
+          # Ubuntu 24.04 (noble) on ubuntu-latest dropped the 4.0 packages;
+          # earlier 22.04 runners had only 4.0. Pin to 4.1 to match noble.
+          # End users need the runtime halves of these (libwebkit2gtk-4.1-0,
+          # gir1.2-webkit2-4.1) installed via their distro's package manager.
           sudo apt-get update
           sudo apt-get install -y \
-            libwebkit2gtk-4.0-37 \
-            gir1.2-webkit2-4.0 \
+            libwebkit2gtk-4.1-0 \
+            gir1.2-webkit2-4.1 \
             libgirepository1.0-dev \
             libcairo2-dev \
             python3-gi \

packaging/requirements-installer.txt

@@ -10,7 +10,10 @@
 # installed:
 #   - Windows: WebView2 runtime (pre-installed on Win10 22H2+ / Win11)
 #   - macOS:   WKWebView (always present, macOS 10.10+)
-#   - Linux:   libwebkit2gtk-4.0-37 + gir1.2-webkit2-4.0 (apt/dnf)
+#   - Linux:   libwebkit2gtk-4.1-0 + gir1.2-webkit2-4.1 (apt/dnf)
+#              On older distros (Ubuntu 22.04 etc.) the 4.0 versions
+#              (libwebkit2gtk-4.0-37 + gir1.2-webkit2-4.0) work too —
+#              pywebview's WebKit2 namespace is identical across both.
 pywebview>=5.0
 
 # Windows backend: WebView2 via .NET interop. pywebview's metadata is