gtk-layer-shell: fix cross compilation

pkgs/development/libraries/gtk-layer-shell/default.nix

@@ -1,11 +1,14 @@
-{ lib, stdenv
+{ lib
+, stdenv
 , fetchFromGitHub
+, fetchpatch
 , meson
 , ninja
 , pkg-config
 , gtk-doc
 , docbook-xsl-nons
 , docbook_xml_dtd_43
+, wayland-scanner
 , wayland
 , gtk3
 , gobject-introspection
@@ -26,6 +29,27 @@ stdenv.mkDerivation rec {
     sha256 = "sha256-Z7jPYLKgkwMNXu80aaZ2vNj57LbN+X2XqlTTq6l0wTE=";
   };
 
+  patches = [
+    # https://github.com/wmww/gtk-layer-shell/pull/146
+    # Mark wayland-scanner as a build-time dependency
+    (fetchpatch {
+      url = "https://github.com/wmww/gtk-layer-shell/commit/6fd16352e5b35fefc91aa44e73671addaaa95dfc.patch";
+      hash = "sha256-U/mxmcRcZnsF0fvWW0axo6ajqW40NuOzNIAzoLCboRM=";
+    })
+    # https://github.com/wmww/gtk-layer-shell/pull/147
+    # Remove redundant dependency check for gtk-doc
+    (fetchpatch {
+      url = "https://github.com/wmww/gtk-layer-shell/commit/124ccc2772d5ecbb40b54872c22e594c74bd39bc.patch";
+      hash = "sha256-WfrWe9UJCp1RvVJhURAxGw4jzqPjoaP6182jVdoEAQs=";
+    })
+  ];
+
+  strictDeps = true;
+
+  depsBuildBuild = [
+    pkg-config
+  ];
+
   nativeBuildInputs = [
     meson
     ninja
@@ -35,6 +59,7 @@ stdenv.mkDerivation rec {
     docbook-xsl-nons
     docbook_xml_dtd_43
     vala
+    wayland-scanner
   ];
 
   buildInputs = [