anchor.diff:  
     lsp_signature-nvim = buildVimPluginFrom2Nix {
       pname = "lsp_signature.nvim";
  -    version = "2021-12-19";
  +    version = "2021-12-21";
       src = fetchFromGitHub {
         owner = "ray-x";
         repo = "lsp_signature.nvim";
  -      rev = "7bb6f4c6f28ef0bcd81af85aa32331c90f832758";
  -      sha256 = "0did2hzcxf6c0q6dvc5wxr3kgrqggb1xjfyyi9a535fmlya1hw9a";
  +      rev = "c8a2a4033cb1769c8f3f67bb3f2e0cb121a2b70a";
  +      sha256 = "0md6jm42cr9vzkyiwrblyl92wyafl2i8cn3zxvyflhhm1rhkchgw";
       };
       meta.homepage = "https://github.com/ray-x/lsp_signature.nvim/";
     };
  
positive.code: 
    vim-test = buildVimPluginFrom2Nix {
      pname = "vim-test";
      version = "2021-12-20";
      src = fetchFromGitHub {
        owner = "vim-test";
        repo = "vim-test";
        rev = "74693c21eada4da2173774b1ed24705c28c244c3";
        sha256 = "138j06jlxhnspmnc2jz46gkm6kwjyxmp2kq6gsrf22c10vv2gdcg";
      };
      meta.homepage = "https://github.com/vim-test/vim-test/";
    };
  
negative.code: 
    vim-polyglot = buildVimPluginFrom2Nix {
      pname = "vim-polyglot";
      version = "2021-12-21";
      src = fetchFromGitHub {
        owner = "sheerun";
        repo = "vim-polyglot";
        rev = "cb80947143fe342797bcf571b6190c86b3c07700";
        sha256 = "0inim34psrkndsr93q1ax8xpg9hcjfchfn7dp84hc629bc2ziv13";
      };
      meta.homepage = "https://github.com/sheerun/vim-polyglot/";
    };
  