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