Sughosha via Guix-patches via <guix-patches@gnu.org> writes:

> * gnu/packages/gnome-xyz.scm (arc-theme): Update to 20221218.
>   [arguments]: Add gtk4 to the list of themes.
>   [inputs]: Add gtk-engines.
> ---
>  gnu/packages/gnome-xyz.scm | 7 ++++---
>  1 file changed, 4 insertions(+), 3 deletions(-)

Thanks, I've pushed this to master as
81ee1d33255764a43eb4854e75890bdb578bdfd1.

Chris