wayland-protocols: init at 1.3

From https://lists.freedesktop.org/archives/wayland-devel/2015-November/025486.html
The purpose of this repository is to decouple Wayland
protocol development from the implementation in weston. wayland-protocols will
have its own releases not coupled with with wayland/weston releases and
will not carry any implementations.

pkgs/development/libraries/wayland/protocols.nix

@@ -0,0 +1,27 @@
+{ lib, stdenv, fetchurl, pkgconfig
+, wayland
+}:
+
+stdenv.mkDerivation rec {
+  name = "wayland-protocols-${version}";
+  version = "1.3";
+
+  src = fetchurl {
+    url = "http://wayland.freedesktop.org/releases/${name}.tar.xz";
+    sha256 = "0byqvrsm6bkvylvzqy8wh5wpszwl5ra1z0yjqzqmw8przlrhdkbb";
+  };
+
+  nativeBuildInputs = [ pkgconfig ];
+
+  buildInputs = [ wayland ];
+
+  meta = {
+    description = "Wayland protocol extensions";
+    homepage    = http://wayland.freedesktop.org/;
+    license     = lib.licenses.mit;
+    platforms   = lib.platforms.linux;
+    maintainers = with lib.maintainers; [ ];
+  };
+
+  passthru.version = version;
+}

pkgs/top-level/all-packages.nix

@@ -8996,6 +8996,8 @@ in
     graphviz = graphviz-nox;
   };
 
+  wayland-protocols = callPackage ../development/libraries/wayland/protocols.nix { };
+
   webkit = webkitgtk;
 
   wcslib = callPackage ../development/libraries/wcslib { };