pythonPackages.pyglet : move to separate expression

pkgs/development/python-modules/pyglet/default.nix

@@ -0,0 +1,27 @@
+{ stdenv, buildPythonPackage, fetchPypi
+, mesa, xorg, freetype, fontconfig}:
+
+buildPythonPackage rec {
+  version = "1.2.4";
+  pname = "pyglet";
+  name = "${pname}-${version}";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "9f62ffbbcf2b202d084bf158685e77d28b8f4f5f2738f4c5e63a947a07503445";
+  };
+
+  patchPhase = let
+    libs = [ mesa xorg.libX11 freetype fontconfig ];
+    paths = builtins.concatStringsSep "," (map (l: "\"${l}/lib\"") libs);
+  in "sed -i -e 's|directories\.extend.*lib[^]]*|&,${paths}|' pyglet/lib.py";
+
+  doCheck = false;
+
+  meta = with stdenv.lib; {
+    homepage = "http://www.pyglet.org/";
+    description = "A cross-platform windowing and multimedia library";
+    license = licenses.bsd3;
+    platforms = platforms.mesaPlatforms;
+  };
+}