anchor.diff:  
     vim-test = buildVimPluginFrom2Nix {
       pname = "vim-test";
  -    version = "2019-04-07";
  +    version = "2019-04-16";
       src = fetchFromGitHub {
         owner = "janko-m";
         repo = "vim-test";
  -      rev = "9c38bb948e7a08fc35b5235535a27fe45777d0e4";
  -      sha256 = "0b7n89rnrk70bh67xlb6wm2fpww8s7v86kia29bfirs5mrii3kqf";
  +      rev = "f54101bb7e190186df39442f87ea66c08e73a1da";
  +      sha256 = "13x0jwk8hv6z52dhgh7w6ism2z0pydlhcxh9qpb3yk42mns57pyd";
       };
     };
   
  
positive.code: 
    emmet-vim = buildVimPluginFrom2Nix {
      pname = "emmet-vim";
      version = "2019-02-10";
      src = fetchFromGitHub {
        owner = "mattn";
        repo = "emmet-vim";
        rev = "d698f1658770ca5fa58c87e80421c8d65bbe9065";
        sha256 = "12dk21ddjw9dz87bw8hq37v1nd4q7q452sn5pa4sa289b9v0ik8q";
        fetchSubmodules = true;
      };
    };
  
negative.code: 
    vim-airline = buildVimPluginFrom2Nix {
      pname = "vim-airline";
      version = "2019-04-18";
      src = fetchFromGitHub {
        owner = "vim-airline";
        repo = "vim-airline";
        rev = "ead2cd63bbe4ceec161f9634c8b52048551f91b4";
        sha256 = "0x0mv047r2li57l2b9cdlpdjl5fy0qhcs973w40kwp8pxnzrs332";
      };
    };
  
  