anchor.diff:  
     vim-markdown = buildVimPluginFrom2Nix {
       pname = "vim-markdown";
  -    version = "2019-07-09";
  +    version = "2020-06-16";
       src = fetchFromGitHub {
         owner = "plasticboy";
         repo = "vim-markdown";
  -      rev = "da5a7ac96f517e0fd6f886bc3fbe27156ca1f946";
  -      sha256 = "198bsv88njz6l2pf9yjxb8292aj7x8n2sxi50q3cdsg29a3y2i5c";
  +      rev = "c179316755bccb44115d031d720037dc58d75e6c";
  +      sha256 = "0ljvlh3glylm9q9fkdq6162i4jsxgyik13wcyjg44vrsgdim02qa";
       };
       meta.homepage = "https://github.com/plasticboy/vim-markdown/";
     };
  
positive.code: 
    coc-fzf = buildVimPluginFrom2Nix {
      pname = "coc-fzf";
      version = "2020-06-13";
      src = fetchFromGitHub {
        owner = "antoinemadec";
        repo = "coc-fzf";
        rev = "2c98c9f34718f5f639bfaae1c193fbe39749f7fc";
        sha256 = "126yqr53y4y30p4sp7942nic6lql6lfx0a1wb0psrrvrc8ccbbpp";
      };
      meta.homepage = "https://github.com/antoinemadec/coc-fzf/";
    };
  
negative.code: 
    tcomment_vim = buildVimPluginFrom2Nix {
      pname = "tcomment_vim";
      version = "2020-06-18";
      src = fetchFromGitHub {
        owner = "tomtom";
        repo = "tcomment_vim";
        rev = "920d465b56bcf96c976fa22e9558d51aa55dcd9c";
        sha256 = "0n7gwdyzim4f92mxnjz4zwfiyapyjhbf21b1l3dq9b07x9m40365";
      };
      meta.homepage = "https://github.com/tomtom/tcomment_vim/";
    };
  