anchor.diff:  
     awesome-vim-colorschemes = buildVimPluginFrom2Nix {
       pname = "awesome-vim-colorschemes";
  -    version = "2019-01-12";
  +    version = "2019-02-16";
       src = fetchFromGitHub {
         owner = "rafi";
         repo = "awesome-vim-colorschemes";
  -      rev = "24df42761d3653aa8ea2c6f88938c8016b3d11df";
  -      sha256 = "03kmmy4na9cxnaf6z34pf9i91sgncxh06xwqmvhg5v8541dsglyq";
  +      rev = "88d883cc89b2d13b3bae60aa294cef57067e17e2";
  +      sha256 = "0f6xa50r9fv9qhw8slfqq0g0p8y2zc08bpg09f2g0lp69gidi7rg";
       };
     };
   
  
positive.code: 
    vim-airline = buildVimPluginFrom2Nix {
      pname = "vim-airline";
      version = "2019-02-04";
      src = fetchFromGitHub {
        owner = "vim-airline";
        repo = "vim-airline";
        rev = "40786883051429053d22ad0da4e04b52e900aaba";
        sha256 = "09igzw2wg2m55bq9l343wgxdgjmhjg62sz3fr2wjgmr5ji4kpkn4";
      };
    };
  
  
negative.code: 
    vim-devicons = buildVimPluginFrom2Nix {
      pname = "vim-devicons";
      version = "2019-02-15";
      src = fetchFromGitHub {
        owner = "ryanoasis";
        repo = "vim-devicons";
        rev = "52543de8e627ae7c6102b4e52ebd52f02420e8a1";
        sha256 = "10g396yq0l1ywgyin65r4s65kciliqcv8pz3b22va3cmg31fgm6b";
      };
    };
  
  