pythonPackages.pyfeed : move to separate expression

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

@@ -0,0 +1,23 @@
+{ stdenv, buildPythonPackage, fetchurl
+, xe }:
+
+buildPythonPackage rec {
+  url = "http://www.blarg.net/%7Esteveha/pyfeed-0.7.4.tar.gz";
+
+  name = stdenv.lib.nameFromURL url ".tar";
+
+  src = fetchurl {
+    inherit url;
+    sha256 = "1h4msq573m7wm46h3cqlx4rsn99f0l11rhdqgf50lv17j8a8vvy1";
+  };
+
+  propagatedBuildInputs = [ xe ];
+
+  # error: invalid command 'test'
+  doCheck = false;
+
+  meta = with stdenv.lib; {
+    homepage = "http://home.blarg.net/~steveha/pyfeed.html";
+    description = "Tools for syndication feeds";
+  };
+}