anchor.diff:  
     vim-airline = buildVimPluginFrom2Nix {
       pname = "vim-airline";
  -    version = "2020-12-30";
  +    version = "2021-01-01";
       src = fetchFromGitHub {
         owner = "vim-airline";
         repo = "vim-airline";
  -      rev = "17bf22e6fb4f8492c95b96538283413bd3c1175a";
  -      sha256 = "1br9qqwmsfff4kz7yyc9rzf1bk610j766qh1kmifjc52fqrc9nfr";
  +      rev = "5601c0928e450a608527593439899671250d403b";
  +      sha256 = "1725fbjilscwvwi76mldw034njf689plzjwxa17y0r0ylfalwql8";
       };
       meta.homepage = "https://github.com/vim-airline/vim-airline/";
     };
  
positive.code: 
    telescope-nvim = buildVimPluginFrom2Nix {
      pname = "telescope-nvim";
      version = "2020-12-31";
      src = fetchFromGitHub {
        owner = "nvim-telescope";
        repo = "telescope.nvim";
        rev = "686d560fa50e130801d5bd64493d79f1c65e3f7c";
        sha256 = "0mfvflmy5mhiyqlssbq0g1a4gk91xkf2lnm29qhf4f5hamprk6pk";
      };
      meta.homepage = "https://github.com/nvim-telescope/telescope.nvim/";
    };
  
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/";
  