anchor.diff:  
     ale = buildVimPluginFrom2Nix {
       pname = "ale";
  -    version = "2021-01-13";
  +    version = "2021-01-16";
       src = fetchFromGitHub {
         owner = "dense-analysis";
         repo = "ale";
  -      rev = "97ce2423b04745d5c7588385ddbd75be9ef846d4";
  -      sha256 = "1q55kd8xqxl43rvj08awyq32a0mrv4svm2932s6q73zb8022db4a";
  +      rev = "9387ccfbc57f34f9fdc6af85cd0dbddf5ee8c5ae";
  +      sha256 = "1p8fxlnwfiaigfrcw8sk832p4msqcl4n45k5qshy625cz9jkysn0";
       };
       meta.homepage = "https://github.com/dense-analysis/ale/";
     };
  
positive.code: 
    nvim-tree-lua = buildVimPluginFrom2Nix {
      pname = "nvim-tree-lua";
      version = "2021-01-10";
      src = fetchFromGitHub {
        owner = "kyazdani42";
        repo = "nvim-tree.lua";
        rev = "361e20ecfa21c6bbc31436cf701ceb87e8e7bde7";
        sha256 = "01yd5i56k8c7kii3gnxh3654d5a8kdmad974yicxj0jzgvawncn4";
      };
      meta.homepage = "https://github.com/kyazdani42/nvim-tree.lua/";
    };
  
    nvim-treesitter = buildVimPluginFrom2Nix {
      pname = "nvim-treesitter";
      version = "2021-01-12";
      src = fetchFromGitHub {
        owner = "nvim-treesitter";
        repo = "nvim-treesitter";
        rev = "39968ca258c89b796fc9ce5f3643ca8781150dd8";
        sha256 = "0lcm37xrysypflyrblmbgn6sv8106mrjv9qg1rf4mn1sbdc7z4bp";
      };
      meta.homepage = "https://github.com/nvim-treesitter/nvim-treesitter/";
    };
  
negative.code: 
    vim-puppet = buildVimPluginFrom2Nix {
      pname = "vim-puppet";
      version = "2021-01-15";
      src = fetchFromGitHub {
        owner = "rodjek";
        repo = "vim-puppet";
        rev = "a3af44488b00481f2a79dc7e4bb49e2767a4e6a4";
        sha256 = "07bspasgd38kj91x3c6nf7wwhbg1sqw8kwvn7c4z11q32ry4hmgk";
      };
      meta.homepage = "https://github.com/rodjek/vim-puppet/";
    };
  