anchor.diff:  
   buildGoPackage rec {
     name = "hub-${version}";
  -  version = "2.5.1";
  +  version = "2.6.0";
   
     goPackagePath = "github.com/github/hub";
   
  
positive.code:     owner = "github";
      repo = "hub";
      rev = "v${version}";
      sha256 = "0a5i351v998vdwf883qhh39c15x56db01fr9hscz4ha7r9550pqg";
    };
  
    buildInputs = [ groff ronn ruby utillinux ] ++
      stdenv.lib.optional stdenv.isDarwin Security;
  
    postPatch = ''
  
negative.code:     install -D etc/hub.fish_completion  "$bin/share/fish/vendor_completions.d/hub.fish"
  
      make man-pages
      cp -vr --parents share/man/man[1-9]/*.[1-9] $bin/
    '';
  
    meta = with stdenv.lib; {
  