I have used (the relevant) patches were taken from https://src.fedoraproject.org/rpms/hplip/c/bbb19dff5e32c47720b7523412dd7a59112a19a3?branch=rawhide and https://src.fedoraproject.org/rpms/hplip/c/d726b77698ed806fb84e482fb40202548095fbe1?branch=rawhide and created https://build.opensuse.org/request/show/1187590