anchor.diff:  
   buildGoPackage rec {
     name = "go2nix-${version}";
  -  version = "1.1.1";
  +  version = "1.2.0";
     rev = "v${version}";
   
     goPackagePath = "github.com/kamilchm/go2nix";
  
positive.code:     wrapProgram $bin/bin/go2nix \
        --prefix PATH : ${nix-prefetch-git}/bin \
        --prefix PATH : ${git}/bin
    '';
  
    allowGoReference = true;
  
negative.code:     inherit rev;
      owner = "kamilchm";
      repo = "go2nix";
      sha256 = "1hlanw56r1phj89sicpsfcz6sdjba9qjwhiblcsqka4wfqkai8pn";
    };
  
    goDeps = ./deps.nix;
  
    outputs = [ "bin" "out" "man" ];
  
    buildInputs = [ go-bindata goimports makeWrapper ];
    preBuild = ''go generate ./...'';
  