anchor.diff: -{ stdenv, fetchFromGitHub , gtk3 }:
  +{ stdenv, fetchFromGitHub , gtk3, breeze-icons, pantheon, gnome-icon-theme, hicolor-icon-theme }:
   
   stdenv.mkDerivation rec  {
     pname = "flat-remix-icon-theme";
  
positive.code:     sha256 = "14n5wydhd5ifmsbj770s2qg2ksd3xa3m61qxydid6jq39k0lxbd8";
    };
  
    nativeBuildInputs = [ gtk3 ];
  
    installPhase = ''
      mkdir -p $out/share/icons
      mv Flat-Remix* $out/share/icons/
    '';
  
    postFixup = ''
      for theme in $out/share/icons/*; do
        gtk-update-icon-cache $theme
      done
  
negative.code:     platforms = platforms.linux;
      maintainers = with maintainers; [ mschneider ];
    };
  }
  