anchor.diff:  
     nvim-treesitter = buildVimPluginFrom2Nix {
       pname = "nvim-treesitter";
  -    version = "2021-05-11";
  +    version = "2021-05-16";
       src = fetchFromGitHub {
         owner = "nvim-treesitter";
         repo = "nvim-treesitter";
  -      rev = "efbb1c66d27eb5b4bfbcc1f59d3384e0641c8214";
  -      sha256 = "1sfc7890v4lgc7r4a5k922qbnc1lpjp3i8sj1jqqxd4a73x1nsvm";
  +      rev = "71247a4a658a7678328fa6224ede103dcf1268fc";
  +      sha256 = "05f90s36nzk13s2rdyrzalwv4psz9pjccw89ihxbik1ndg8iwz18";
       };
       meta.homepage = "https://github.com/nvim-treesitter/nvim-treesitter/";
     };
  
positive.code: 
    rust-tools-nvim = buildVimPluginFrom2Nix {
      pname = "rust-tools-nvim";
      version = "2021-05-10";
      src = fetchFromGitHub {
        owner = "simrat39";
        repo = "rust-tools.nvim";
        rev = "2de94fc88d6382e5f0b61f1c619c8919fd45aea3";
        sha256 = "14fg0qs1y2xszpdsnp8gcynqj9fx5c47ckbpgr48hv5df8xncasf";
      };
      meta.homepage = "https://github.com/simrat39/rust-tools.nvim/";
    };
  
negative.code: # This file has been generated by ./pkgs/misc/vim-plugins/update.py. Do not edit!
  { lib, buildVimPluginFrom2Nix, fetchFromGitHub }:
  
  final: prev:
  {
    a-vim = buildVimPluginFrom2Nix {
      pname = "a-vim";
  