anchor.diff:  
     vim-eunuch = buildVimPluginFrom2Nix {
       pname = "vim-eunuch";
  -    version = "2020-08-07";
  +    version = "2021-04-05";
       src = fetchFromGitHub {
         owner = "tpope";
         repo = "vim-eunuch";
  -      rev = "4a4bf16b499dcde371c05c77ed4083c4b5228278";
  -      sha256 = "1wclxqw3b4jcj34jb830551c9bbrsm79mp7aahbqnjgq025j53x0";
  +      rev = "dbbbf853fc523d312f61b4bbdf2e13297645dcde";
  +      sha256 = "0lwkzxz76pcmash56p14pf54blz9v9kw17qj2i5wa8wdcymia98l";
       };
       meta.homepage = "https://github.com/tpope/vim-eunuch/";
     };
  
positive.code: 
    ultisnips = buildVimPluginFrom2Nix {
      pname = "ultisnips";
      version = "2021-02-09";
      src = fetchFromGitHub {
        owner = "SirVer";
        repo = "ultisnips";
        rev = "66d81fc2c0bda30be69fffa46da0932ee8d5ddd5";
        sha256 = "0fzpl2fj5kig8kbcn65ph6y3h412ryx5mfa15822lnsf8cmkr5db";
      };
      meta.homepage = "https://github.com/SirVer/ultisnips/";
    };
  
    undotree = buildVimPluginFrom2Nix {
      pname = "undotree";
      version = "2021-03-18";
      src = fetchFromGitHub {
        owner = "mbbill";
        repo = "undotree";
        rev = "da7aeb3dc307a2995b6b761fe94cad61da9845e0";
        sha256 = "1mg9r7kc4jpbmh8b0wcax82a80r0qjl2yq61cc55x7i91wssrj60";
      };
      meta.homepage = "https://github.com/mbbill/undotree/";
    };
  
negative.code: 
    vim-tmux-focus-events = buildVimPluginFrom2Nix {
      pname = "vim-tmux-focus-events";
      version = "2021-04-04";
      src = fetchFromGitHub {
        owner = "tmux-plugins";
        repo = "vim-tmux-focus-events";
        rev = "26237f9284c3853084fbf9e8303efb8fb62e0aa9";
        sha256 = "0pmkjwpad63gdrp0qykkcsjdavb5kxwqvlcip0ykdm6ivvzi9fy5";
      };
      meta.homepage = "https://github.com/tmux-plugins/vim-tmux-focus-events/";
    };
  