anchor.diff:    meta = with stdenv.lib; {
       description = "Markdown notes editor and manager designed for elementary OS"
       + stdenv.lib.optionalString withPantheon " - built with Contractor support";
  -    homepage = https://github.com/Philip-Scott/Notes-up;
  +    homepage = "https://github.com/Philip-Scott/Notes-up";
       license = licenses.gpl2;
       maintainers = with maintainers; [ davidak worldofpeace ];
       platforms = platforms.linux;
  
positive.code:   nativeBuildInputs = [
      cmake
      ninja
      vala
      pkgconfig
      wrapGAppsHook
    ];
  
negative.code: , fetchFromGitHub
  , pantheon
  , pkgconfig
  , vala_0_46
  , cmake
  , ninja
  , gtk3
  