anchor.diff:      '';
   
     meta = {
  -    description = "Tool for visualization of Git repositories.";
  +    description = "Tool for visualization of Git repositories";
       homepage = https://github.com/esc/git-big-picture;
       license = stdenv.lib.licenses.gpl3;
       platforms = stdenv.lib.platforms.linux;
  
positive.code:     owner = "esc";
      repo = pname;
      rev = "v${version}";
      sha256 = "1h283gzs4nx8lrarmr454zza52cilmnbdrqn1n33v3cn1rayl3c9";
    };
  
    buildInputs = [ git graphviz ];
  
negative.code: 
  python2Packages.buildPythonApplication rec {
    pname = "git-big-picture";
    version = "0.10.1";
  
    name = "${pname}-${version}";
  
  