xdg-desktop-portal-cosmic: enable strictDeps, fix cross compilation

pkgs/by-name/xd/xdg-desktop-portal-cosmic/package.nix

@@ -3,6 +3,7 @@
   stdenv,
   rustPlatform,
   fetchFromGitHub,
+  glib,
   libcosmicAppHook,
   pkg-config,
   util-linux,
@@ -29,6 +30,7 @@ rustPlatform.buildRustPackage (finalAttrs: {
   cargoHash = "sha256-0PsiB/xvePSi5o1eRUgCq02UAGzuBQEe8+LlFJi5814=";
 
   separateDebugInfo = true;
+  strictDeps = true;
 
   nativeBuildInputs = [
     libcosmicAppHook
@@ -38,6 +40,7 @@ rustPlatform.buildRustPackage (finalAttrs: {
   ];
 
   buildInputs = [
+    glib
     libgbm
     pipewire
   ];