python/pypillowfight: init at 0.2.1

First of all: This is NOT the same package as "pillowfight".

I'm not sure why people want to choose this particular name, but well,
so be it.

I haven't investigated why test_ace and test_all_2 fail, but I've
disabled these tests by now and reported the failures upstream at
jflesch/libpillowfight#2.

Tested by building against Python 3.3, 3.4, 3.5 and 3.6.

Signed-off-by: aszlig <aszlig@redmoonstudios.org>

pkgs/top-level/python-packages.nix

@@ -8824,6 +8824,39 @@ in {
     };
   };
 
+  pypillowfight = buildPythonPackage rec {
+    name = "pypillowfight-${version}";
+    version = "0.2.1";
+
+    src = pkgs.fetchFromGitHub {
+      owner = "jflesch";
+      repo = "libpillowfight";
+      rev = version;
+      sha256 = "1rwmajsy9qhl3qhhy5mw0xmr3n8abxcq8baidpn0sxv6yjg2369z";
+    };
+
+    # Disable certain tests. Reported upstream at:
+    # https://github.com/jflesch/libpillowfight/issues/2
+    postPatch = ''
+      sed -i -e '/test_\(all_2\|ace\)/i \    @unittest.expectedFailure' \
+        tests/tests_ace.py tests/tests_all.py
+    '';
+
+    # Python 2.x is not supported, see:
+    # https://github.com/jflesch/libpillowfight/issues/1
+    disabled = !isPy3k && !isPyPy;
+
+    # This is needed by setup.py regardless of whether tests are enabled.
+    buildInputs = [ self.nose ];
+    propagatedBuildInputs = [ self.pillow ];
+
+    meta = {
+      description = "Library containing various image processing algorithms";
+      homepage = "https://github.com/jflesch/libpillowfight";
+      license = licenses.gpl3Plus;
+    };
+  };
+
   python-axolotl = buildPythonPackage rec {
     name = "python-axolotl-${version}";
     version = "0.1.35";