anchor.diff:        --prefix PYTHONPATH : "$PYTHONPATH" \
         --prefix GI_TYPELIB_PATH : "$GI_TYPELIB_PATH"
   
  -    mkdir -p $out/lib/udev/rules.d
  -    cp rules.d/*.rules $out/lib/udev/rules.d/
  +    install -Dm644 -t $out/etc/udev/rules.d rules.d/*.rules
     '';
   
     enableParallelBuilding = true;
  -  meta = with stdenv.lib; {
  +
  +  meta = with lib; {
       description = "Linux devices manager for the Logitech Unifying Receiver";
       longDescription = ''
         Solaar is a Linux device manager for Logitech’s Unifying Receiver
  
positive.code: {fetchFromGitHub, stdenv, gtk3, pythonPackages, gobject-introspection}:
  pythonPackages.buildPythonApplication rec {
    pname = "solaar-unstable";
    version = "2019-01-30";
  
  
negative.code:     license = licenses.gpl2;
      homepage = https://pwr.github.io/Solaar/;
      platforms = platforms.linux;
      maintainers = with maintainers; [ spinus ysndr ];
    };
  }
  