anchor.diff:      };
     };
   
  +  push = zncDerivation rec {
  +    name = "znc-push-${version}";
  +    version = "git-2015-12-07";
  +    module_name = "push";
  +
  +    src = fetchgit {
  +      url = "https://github.com/jreese/znc-push.git";
  +      rev = "717a2b1741eee75456b0862ef76dbb5af906e936";
  +      sha256 = "1lr5bhcy8156f7sbah7kjgz4g4mhkkwgvwjd2rxpbwnpq3ssza9k";
  +    };
  +
  +    meta = {
  +      description = "Push notification service module for ZNC";
  +      homepage = https://github.com/jreese/znc-push;
  +      repositories.git = https://github.com/jreese/znc-push.git;
  +      license = stdenv.lib.licenses.mit;
  +      maintainers = [ stdenv.lib.maintainers.offline ];
  +    };
  +  };
  +
   }
  
positive.code:   });
  
  in rec {
  
    push = zncDerivation rec {
      name = "znc-push-${version}";
      version = "1.0.0";
      module_name = "push";
  
      src = fetchurl {
          url = "https://github.com/jreese/znc-push/archive/v${version}.tar.gz";
          sha256 = "1v9a16b1d8mfzhddf4drh6rbxa0szr842g7614r8ninmc0gi7a2v";
      };
  
      meta = {
        description = "Push notification service module for ZNC";
        homepage = https://github.com/jreese/znc-push;
        repositories.git = https://github.com/jreese/znc-push.git;
        license = stdenv.lib.licenses.mit;
        maintainers = [ stdenv.lib.maintainers.offline ];
      };
    };
  
    fish = zncDerivation rec {
      name = "znc-fish-8e1f150fda";
  
negative.code: { stdenv, fetchurl, fetchgit, znc }:
  
  let
    zncDerivation = a@{
      name, src, module_name,
      buildPhase ? "${znc}/bin/znc-buildmod ${module_name}.cpp",
  