anchor.diff:  
     vimtex = buildVimPluginFrom2Nix {
       pname = "vimtex";
  -    version = "2021-09-11";
  +    version = "2021-09-12";
       src = fetchFromGitHub {
         owner = "lervag";
         repo = "vimtex";
  -      rev = "c445c1684bd5cedc7adb2226f0e88292e1a988f0";
  -      sha256 = "0h9ks1v3qli5k1a85s5wg4lvv6pml7xgxynnmh1s6cv42b1hn6dy";
  +      rev = "4989653b88dd94cf23395894123f3d37138f9f52";
  +      sha256 = "0abgkw1sgbnm12hlsg23i01laza3yamxgssxm5sb22gn1pmq0l51";
       };
       meta.homepage = "https://github.com/lervag/vimtex/";
     };
  
positive.code: 
    mattn-calendar-vim = buildVimPluginFrom2Nix {
      pname = "mattn-calendar-vim";
      version = "2021-09-06";
      src = fetchFromGitHub {
        owner = "mattn";
        repo = "calendar-vim";
        rev = "4cdf69c43d66500b1c1235f3c1c584f257115cb9";
        sha256 = "06phscsjqb3wnwdmb5w8rirj02fcz9svp5wdnzv9jkvj822ni4pr";
      };
      meta.homepage = "https://github.com/mattn/calendar-vim/";
    };
  
negative.code: 
    vim-dadbod = buildVimPluginFrom2Nix {
      pname = "vim-dadbod";
      version = "2021-09-12";
      src = fetchFromGitHub {
        owner = "tpope";
        repo = "vim-dadbod";
        rev = "3900e1003ba64bce7d8ed877d742bee386ad56dc";
        sha256 = "1xbjadnp0mx4a6r5ghlqx7w9ngf930yg4qyhkvlji0scf20vvjis";
      };
      meta.homepage = "https://github.com/tpope/vim-dadbod/";
    };
  