anchor.diff:      src = fetchgit {
         url = "git://github.com/scrooloose/nerdcommenter";
         rev = "6549cfde45339bd4f711504196ff3e8b766ef5e6";
  -      sha256 = "";
  +      sha256 = "ef270ae5617237d68b3d618068e758af8ffd8d3ba27a3799149f7a106cfd178e";
       };
       dependencies = [];
   
  
positive.code:     src = fetchgit {
        url = "git://github.com/MarcWeber/vim-addon-async";
        rev = "dadc96e188f1cdacbac62129eb29a1eacfed792c";
        sha256 = "";
      };
      dependencies = [];
  
    };
    "vim-addon-commenting" = buildVimPluginFrom2Nix { # created by nix#NixDerivation
  
negative.code:     src = fetchgit {
        url = "git://github.com/tpope/vim-fugitive";
        rev = "2c8461db084d205903a792a23163faa546f143c9";
        sha256 = "c2569877958fcc5d181cc5b9e26d6b0b022c30aa9ce0908dd96131b44eb90729";
      };
      dependencies = [];
  
  