anchor.diff:  with stdenv.lib;
   
   stdenv.mkDerivation {
  -  name = "bup-0.25git20120722";
  +  name = "bup-0.25git20121224";
   
     src = fetchgit {
  -    url = "https://github.com/apenwarr/bup.git";
  -    sha256 = "3ad232d7f23071ed34f920bd4c3137583f1adffbe23c022896289bc0a03fe7aa";
  -    rev = "02bd2b566ea5eec2fd656e0ae572b4c7b6b9550a";
  +    url = "https://github.com/bup/bup.git";
  +    sha256 = "f0e0c835ab83f00b28920d493e4150d2247113aad3a74385865c2a8c6f1ba7b8";
  +    rev = "458e92da32ddd3c18fc1c3e52a76e9f0b48b832f";
     };
   
     buildNativeInputs = [ pandoc perl makeWrapper ];
  
positive.code:       substituteInPlace $f --replace "/usr/bin/env python" "${python}/bin/python"
      done
      substituteInPlace Makefile --replace "./format-subst.pl" "perl ./format-subst.pl"
      substituteInPlace lib/bup/csetup.py \
        --replace "'bupsplit.c'])" "'bupsplit.c'], library_dirs=['${python}/lib'])"
    '';
  
    makeFlags = [
  
negative.code:       Highly efficient file backup system based on the git packfile format.
        Capable of doing *fast* incremental backups of virtual machine images.
      '';
      homepage = "https://github.com/bup/bup";
    };
  }
  