anchor.diff:  
     nvim-treesitter = buildVimPluginFrom2Nix {
       pname = "nvim-treesitter";
  -    version = "2021-05-20";
  +    version = "2021-05-22";
       src = fetchFromGitHub {
         owner = "nvim-treesitter";
         repo = "nvim-treesitter";
  -      rev = "9a3acbc48d61995d98cf073fef8b0b57b3cfb0b9";
  -      sha256 = "1iggsissn8amhx9hp8fnya44rq5m7jnqm8mpgk4j7lgxq1zibgm4";
  +      rev = "9d1d9b1b9438f8c5b2d4c48fe040160b0ac6b316";
  +      sha256 = "1slhsnkza7wrm0vybfx98r7767hjlzlymy66hh6py27a8bazr5aj";
       };
       meta.homepage = "https://github.com/nvim-treesitter/nvim-treesitter/";
     };
  
positive.code:       owner = "flazz";
        repo = "vim-colorschemes";
        rev = "fd8f122cef604330c96a6a6e434682dbdfb878c9";
        sha256 = "1cg8q7w0vgl73aw1b9zz0zh5vw5d2pm8pm54fhfzva4azg56f416";
      };
      meta.homepage = "https://github.com/flazz/vim-colorschemes/";
    };
  
negative.code: 
    edge = buildVimPluginFrom2Nix {
      pname = "edge";
      version = "2021-05-22";
      src = fetchFromGitHub {
        owner = "sainnhe";
        repo = "edge";
        rev = "af858776b6faf81b9eb50f8bbb87c639ee483c93";
        sha256 = "07smppxp2wr4282vsz0zdx3kkhvrx9f5140dwx4h4p8chs1c1zc5";
      };
      meta.homepage = "https://github.com/sainnhe/edge/";
    };
  