weblate: add missing typelib for cairo (#465298)

nixos/modules/services/web-apps/weblate.nix

@@ -369,9 +369,10 @@ in
             });
           in
           ''
-            ${gunicorn}/bin/gunicorn \
+            ${lib.getExe gunicorn} \
               --name=weblate \
               --bind='unix:///run/weblate.socket' \
+              --preload \
               weblate.wsgi
           '';
         ExecReload = "${lib.getExe' pkgs.coreutils "kill"} -s HUP $MAINPID";

pkgs/by-name/we/weblate/package.nix

@@ -8,6 +8,7 @@
   librsvg,
   gdk-pixbuf,
   glib,
+  gobject-introspection,
   borgbackup,
   writeText,
   nixosTests,
@@ -154,6 +155,7 @@ python.pkgs.buildPythonApplication rec {
     librsvg
     gdk-pixbuf
     glib
+    gobject-introspection
   ];
   makeWrapperArgs = [ "--set GI_TYPELIB_PATH \"$GI_TYPELIB_PATH\"" ];