anchor.diff:  
   stdenv.mkDerivation rec {
       pname = "polybar";
  -    version = "3.5.2";
  +    version = "3.5.5";
   
       src = fetchFromGitHub {
         owner = pname;
         repo = pname;
         rev = version;
  -      sha256 = "1ir8fdnzrba9fkkjfvax5szx5h49lavwgl9pabjzrpbvif328g3x";
  +      sha256 = "sha256-oRtTm5bXdL0C2WJsaK8H2Oc40DPWgAfjP7FgIHrpKGI=";
         fetchSubmodules = true;
       };
  +
  +    nativeBuildInputs = [
  +      cmake
  +      pkg-config
  +      python3Packages.sphinx
  +      removeReferencesTo
  +
  +      (if i3Support || i3GapsSupport then makeWrapper else null)
  +    ];
   
       buildInputs = [
         cairo
  
positive.code: , pcre
  , pkg-config
  , python3
  , lib
  , stdenv
  , xcbproto
  
negative.code:       (if i3Support || i3GapsSupport then jsoncpp else null)
        (if i3Support then i3 else null)
        (if i3GapsSupport then i3-gaps else null)
      ];
  
      postInstall = if i3Support
  