anchor.diff:  
     vim-vsnip = buildVimPluginFrom2Nix {
       pname = "vim-vsnip";
  -    version = "2020-11-28";
  +    version = "2020-12-06";
       src = fetchFromGitHub {
         owner = "hrsh7th";
         repo = "vim-vsnip";
  -      rev = "7983a425d676e79d7fbd8e8870ecee3b15f9a78c";
  -      sha256 = "0c3rh0vkg65n2d2kmqfizigwn9jkb8azjla1ymgc49yzmy49jghf";
  +      rev = "17afebf49f3a13a4dbf44c90c0b5a9caf1cdbeb4";
  +      sha256 = "0xarnz4d9liwckgblckjma5yc66mal4ilggfjcr41i68h6mhdj88";
       };
       meta.homepage = "https://github.com/hrsh7th/vim-vsnip/";
     };
  
positive.code: 
    coc-fzf = buildVimPluginFrom2Nix {
      pname = "coc-fzf";
      version = "2020-11-28";
      src = fetchFromGitHub {
        owner = "antoinemadec";
        repo = "coc-fzf";
        rev = "ce0cdfd91b184da76874024265d6e7d1ac06e073";
        sha256 = "07v094rn7vh8sa5psw0cg47m5v2qypzndd4ddcpgmxdr64z8xqgs";
      };
      meta.homepage = "https://github.com/antoinemadec/coc-fzf/";
    };
  
negative.code: 
    calendar-vim = buildVimPluginFrom2Nix {
      pname = "calendar-vim";
      version = "2020-11-30";
      src = fetchFromGitHub {
        owner = "itchyny";
        repo = "calendar.vim";
        rev = "4a27972d1af6a4a659cebefeed8ec81f3c783c79";
        sha256 = "17wy2zybnlcajy91rcs2px726c0c1gjssggwyilx14wkp52ag0zn";
      };
      meta.homepage = "https://github.com/itchyny/calendar.vim/";
    };
  