anchor.diff:  
     meta = with lib; {
       homepage = "https://upower.freedesktop.org/";
  +    changelog = "https://gitlab.freedesktop.org/upower/upower/-/blob/v${version}/NEWS";
       description = "A D-Bus service for power management";
  +    maintainers = teams.freedesktop.members;
       platforms = platforms.linux;
       license = licenses.gpl2Plus;
     };
  
positive.code: , ninja
  , python3
  , gtk-doc
  , docbook_xsl
  , udev
  , libgudev
  , libusb1
  
negative.code: 
  stdenv.mkDerivation rec {
    pname = "upower";
    version = "0.99.17";
  
    outputs = [ "out" "dev" "devdoc" ];
  
  