anchor.diff:  
     vim-pandoc = buildVimPluginFrom2Nix {
       pname = "vim-pandoc";
  -    version = "2019-12-03";
  +    version = "2019-12-18";
       src = fetchFromGitHub {
         owner = "vim-pandoc";
         repo = "vim-pandoc";
  -      rev = "10d5ac88f4f6e98268b0fe999fd93bbf4cf6d778";
  -      sha256 = "13i2lhzsvwr7qbq53xjxg1khklsbbisizgvjllap1cmbxbmnxq49";
  +      rev = "b29871936f064be43ea9774cdf6980677830288c";
  +      sha256 = "0i20dlcnaf84fnsip9bfqz2clqgsq2vrzjxwq2mc1pj8pfvgr8r3";
       };
     };
   
  
positive.code: 
    vim-jsx-pretty = buildVimPluginFrom2Nix {
      pname = "vim-jsx-pretty";
      version = "2019-12-11";
      src = fetchFromGitHub {
        owner = "MaxMEllon";
        repo = "vim-jsx-pretty";
        rev = "0d07dc85ba5a14b7e95f1f36539741d99c632bfb";
        sha256 = "1wxxln76mk5wd73pmaf67kv2q7gj6rb9zdfgx4hqx0jdcywhrjnw";
      };
    };
  
  
negative.code: 
    nerdcommenter = buildVimPluginFrom2Nix {
      pname = "nerdcommenter";
      version = "2019-12-21";
      src = fetchFromGitHub {
        owner = "scrooloose";
        repo = "nerdcommenter";
        rev = "ce590719f67ec031f75935bdbfe0c9616ea878b9";
        sha256 = "09q72ddypwh8mpg467nl6z16mvs29gxhwlmm3npn0817c6sf9dqb";
      };
    };
  
  