anchor.diff:  
     nvim-treesitter = buildVimPluginFrom2Nix {
       pname = "nvim-treesitter";
  -    version = "2021-04-23";
  +    version = "2021-04-24";
       src = fetchFromGitHub {
         owner = "nvim-treesitter";
         repo = "nvim-treesitter";
  -      rev = "af3537fbe57a2a37ab2b620c9ecc487e31b4da64";
  -      sha256 = "1z4k0a8gyz8ycd6wq8npg056l0axz3vj7pipxcpi1i9xa4kx3j6i";
  +      rev = "b68f0cc70022fedec9b9190904d6035393111cdf";
  +      sha256 = "07zp1fbah65f7lglfkmdzi6cyfchlaf1ap02wzwixiv5hpy6zji4";
       };
       meta.homepage = "https://github.com/nvim-treesitter/nvim-treesitter/";
     };
  
positive.code: 
    chadtree = buildVimPluginFrom2Nix {
      pname = "chadtree";
      version = "2021-04-23";
      src = fetchFromGitHub {
        owner = "ms-jpq";
        repo = "chadtree";
        rev = "5b286768438921cbc77d6cfb4a7046ea45c8adfc";
        sha256 = "1g5g1yqr78l620vr7vslx15j2f4dfg4bb8wwjgfqx0pw5lc982yc";
      };
      meta.homepage = "https://github.com/ms-jpq/chadtree/";
    };
  
negative.code: 
    ci_dark = buildVimPluginFrom2Nix {
      pname = "ci_dark";
      version = "2021-04-24";
      src = fetchFromGitHub {
        owner = "chuling";
        repo = "ci_dark";
        rev = "4c314000b5a21a1b9f52442a0c80e4b3fd4f0a1f";
        sha256 = "1wxsgaixdmb8v87kavvyyiyqlkn7ck5g39hkq4j19747jnb6lvqf";
      };
      meta.homepage = "https://github.com/chuling/ci_dark/";
    };
  