anchor.diff:  
     };
   
  +  vim-addon-errorformats = buildVimPluginFrom2Nix { # created by nix#NixDerivation
  +    name = "vim-addon-errorformats-2014-11-05";
  +    src = fetchgit {
  +      url = "git://github.com/MarcWeber/vim-addon-errorformats";
  +      rev = "dcbb203ad5f56e47e75fdee35bc92e2ba69e1d28";
  +      sha256 = "a1260206545d5ae17f2e6b3319f5cf1808b74e792979b1c6667d75974cc53f95";
  +    };
  +    dependencies = [];
  +
  +  };
  +
  +  vim-addon-goto-thing-at-cursor = buildVimPluginFrom2Nix { # created by nix#NixDerivation
  +    name = "vim-addon-goto-thing-at-cursor-2012-01-11";
  +    src = fetchgit {
  +      url = "git://github.com/MarcWeber/vim-addon-goto-thing-at-cursor";
  +      rev = "f052e094bdb351829bf72ae3435af9042e09a6e4";
  +      sha256 = "34658ac99d9a630db9c544b3dfcd2c3df69afa5209e27558cc022b7afc2078ea";
  +    };
  +    dependencies = ["tlib"];
  +
  +  };
  +
     vim-addon-local-vimrc = buildVimPluginFrom2Nix { # created by nix#NixDerivation
       name = "vim-addon-local-vimrc-2015-03-19";
       src = fetchgit {
  
positive.code:     '';
    };
  
    undotree = buildVimPluginFrom2Nix { # created by nix#NixDerivation
      name = "undotree-2015-08-19";
      src = fetchgit {
  
negative.code: 
    };
  
    vim-addon-actions = buildVimPluginFrom2Nix { # created by nix#NixDerivation
      name = "vim-addon-actions-2014-09-22";
      src = fetchgit {
        url = "git://github.com/MarcWeber/vim-addon-actions";
        rev = "a5d20500fb8812958540cf17862bd73e7af64936";
        sha256 = "d2c3eb7a1f29e7233c6fcf3b02d07efebe8252d404ee593419ad399a5fdf6383";
      };
      dependencies = ["vim-addon-mw-utils" "tlib"];
  
    };
  
    vim-addon-async = buildVimPluginFrom2Nix { # created by nix#NixDerivation
      name = "vim-addon-async-2013-10-18";
      src = fetchgit {
  