anchor.diff:      owner = "ctmarinas";
       repo = "stgit";
       rev = "v${version}";
  -    sha256 = "16gwdad18rc9bivyzrjccp83iccmqr45fp2zawycmrfp2ancffc7";
  +    sha256 = "0xpvs5fa50rrvl2c8naha1nblk5ip2mgg63a9srqqxfx6z8qmrfz";
     };
   
     buildInputs = [ python2 git ];
  
positive.code: 
    meta = with stdenv.lib; {
      description = "A patch manager implemented on top of Git";
      homepage = http://procode.org/stgit/;
      license = licenses.gpl2;
      maintainers = with maintainers; [ the-kenny ];
      platforms = platforms.unix;
  
negative.code: 
  let
    name = "stgit-${version}";
    version = "0.22";
  in
  stdenv.mkDerivation {
    inherit name;
  