Please branch and build snapd-glib in epel9. If you do not wish to maintain snapd-glib in epel9, or do not think you will be able to do this in a timely manner, I would be happy to be a co-maintainer of the package. I have tested and the rawhide package builds in EPEL9 without any changes.
Requested: https://pagure.io/releng/fedora-scm-requests/issue/40084
FEDORA-EPEL-2022-7eb132c701 has been submitted as an update to Fedora EPEL 9. https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2022-7eb132c701
FEDORA-EPEL-2022-7eb132c701 has been pushed to the Fedora EPEL 9 stable repository. If problem still persists, please make note of it in this bug report.