anchor.diff:  
     vim-clap = buildVimPluginFrom2Nix {
       pname = "vim-clap";
  -    version = "2020-12-16";
  +    version = "2021-01-01";
       src = fetchFromGitHub {
         owner = "liuchengxu";
         repo = "vim-clap";
  -      rev = "af939a85cc78c9974dcf202a95ff8793755d575d";
  -      sha256 = "1kcnj0jqbag62gvxrr54hmri5qpskfs0i0l2m8z4ffliixy0mkan";
  +      rev = "b9ca65dbcc89dfb2702fb2ab0e98c7119f4e6bbf";
  +      sha256 = "0j9xh0yf224fsnm9ksml9m8jfx4m9iji0a6h8q0mk8zglvh6qksc";
       };
       meta.homepage = "https://github.com/liuchengxu/vim-clap/";
     };
  
positive.code: 
    nvim-treesitter-textobjects = buildVimPluginFrom2Nix {
      pname = "nvim-treesitter-textobjects";
      version = "2020-12-27";
      src = fetchFromGitHub {
        owner = "nvim-treesitter";
        repo = "nvim-treesitter-textobjects";
        rev = "36e6a52875fbd12245b0cf379be66aab404b50ac";
        sha256 = "10rxqm483z95xzlv14in2qssmlksr0j58mz0bbxnb6wbv2n7qzjh";
      };
      meta.homepage = "https://github.com/nvim-treesitter/nvim-treesitter-textobjects/";
    };
  
negative.code: 
    yats-vim = buildVimPluginFrom2Nix {
      pname = "yats-vim";
      version = "2021-01-01";
      src = fetchFromGitHub {
        owner = "HerringtonDarkholme";
        repo = "yats.vim";
        rev = "3c1d985ed8761eb5917b57b7a7b26401c796c994";
        sha256 = "0vf8nadhh0z920j2qzhsnklszn1ppy8cnyzaywlz46nmd4nys15s";
        fetchSubmodules = true;
      };
      meta.homepage = "https://github.com/HerringtonDarkholme/yats.vim/";
  