anchor.diff:  }:
   
   let
  -  major = "2.0";
  -  patch = "0";
  +  channel = "2.0";
  +  version = "${channel}.1";
   
  -  version = "${major}.${patch}";
  -
  -  baseUrl = "mirror://kernel/linux/utils/cryptsetup/v${major}";
  +  baseUrl = "mirror://kernel/linux/utils/cryptsetup/v${channel}";
   in
   stdenv.mkDerivation rec {
     name = "cryptsetup-${version}";
  
positive.code:     };
    };
  
    meta = with stdenv.lib; {
      description = "LUKS for dm-crypt";
      homepage = http://code.google.com/p/cryptsetup/;
      license = licenses.gpl2;
  
negative.code:   src = fetchurl {
      url = "${baseUrl}/${name}.tar.xz";
      hashOutput = false;
      sha256 = "41d188092c52e23d576af41cf0cfe0555d8f7efa21598d4c57c56ea1b6d9c975";
    };
  
    buildInputs = [
  