anchor.diff:          git
           ruby
           rubygems
  -        rubyLibs.nix
  +        #rubyLibs.nix
           nix
   
  -        rubyLibs.heroku rubyLibs.rb_readline
  -        rubyLibs.travis
  +        #rubyLibs.heroku rubyLibs.rb_readline
  +        #rubyLibs.travis
         ];
         ignoreCollisions = true;
       };
  
positive.code:         nodejs
          python
          utillinux
          (with nodePackages; [ bower grunt-cli node-inspector ])
        ];
        ignoreCollisions = true;
      };
  
negative.code:   };
  #  st.conf = builtins.readFile ./.st.conf;
    allowUnfree = true;
    mpv.vaapiSupport = true;
  }
  