python-pyblock: Update to version 0.53.

As the SHA256 changed in the meantime and there are only minor changes
between 0.52 and 0.53, I've updated this to the release tarball, which
hopefully won't change anytime soon.

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

pkgs/top-level/python-packages.nix

@@ -4157,13 +4157,13 @@ pythonPackages = modules // import ./python-packages-generated.nix {
 
 
   pyblock = stdenv.mkDerivation rec {
-    name = "python-pyblock-${version}";
-    version = "0.52-1";
+    name = "pyblock-${version}";
+    version = "0.53";
 
-    src = fetchurl {
-      url = "https://git.fedorahosted.org/cgit/pyblock.git/snapshot/"
-          + "pyblock-${version}.tar.bz2";
-      sha256 = "1jj5hd1dcr8xx00rg3jynsf4ak88wwr5id3fmb0qf6zvim1whj7l";
+    src = fetchurl rec {
+      url = "http://pkgs.fedoraproject.org/repo/pkgs/python-pyblock/"
+          + "${name}.tar.bz2/${md5}/${name}.tar.bz2";
+      md5 = "f6d33a8362dee358517d0a9e2ebdd044";
     };
 
     postPatch = ''