anchor.diff:  
     vim-test = buildVimPluginFrom2Nix {
       pname = "vim-test";
  -    version = "2021-12-14";
  +    version = "2021-12-15";
       src = fetchFromGitHub {
         owner = "vim-test";
         repo = "vim-test";
  -      rev = "9895268249f88ef67d10a20cc1a020a40096a1d9";
  -      sha256 = "1q0544vlp55l4cpb7f6ifmf3f8vw8zd0ra2ly21q562rxdd3l1zw";
  +      rev = "8baf452190d9fa851577cdf6df7c6489bd621827";
  +      sha256 = "0gxk2644n33j26wlnacj22ilhhlxkcid2vici9qkbx8wi8wgrlbv";
       };
       meta.homepage = "https://github.com/vim-test/vim-test/";
     };
  
positive.code: 
    nvim-lspconfig = buildVimPluginFrom2Nix {
      pname = "nvim-lspconfig";
      version = "2021-12-14";
      src = fetchFromGitHub {
        owner = "neovim";
        repo = "nvim-lspconfig";
        rev = "dd15974986619b1f3143a9e666e36f41763ccdb4";
        sha256 = "0fm89s27gmd8v6k2qc672impyhs3pjyjijmw4li127czrw9w64k4";
      };
      meta.homepage = "https://github.com/neovim/nvim-lspconfig/";
    };
  
negative.code: 
    lightspeed-nvim = buildVimPluginFrom2Nix {
      pname = "lightspeed.nvim";
      version = "2021-12-15";
      src = fetchFromGitHub {
        owner = "ggandor";
        repo = "lightspeed.nvim";
        rev = "b28fa0816f961225f4478acb0299e93effcabadc";
        sha256 = "0g8yrhvy4dzfvvwikv6qyfcld9ds4bpdif6pinihffpkh5kjmccz";
      };
      meta.homepage = "https://github.com/ggandor/lightspeed.nvim/";
    };
  