Comment 60 for bug 1771880

There are at least 2 bugs here.

One is that gnome-keyring doesn't whitelist Seahorse in /usr/share/p11-kit/modules/gnome-keyring.module, so its PKCS#11 module doesn't load inside Seahorse at all, cutting off Seahorse from the user's certificates. A merge request (with a patch to remove that whole list and allow loading everywhere) is at https://gitlab.gnome.org/GNOME/gnome-keyring/-/merge_requests/61.

The other is a gcr-3 regression introduced when they migrated from autotools to meson, that left out a resource file from the build. A merge request with my patch is at https://gitlab.gnome.org/GNOME/gcr/-/merge_requests/134 but I am not sure whether the gcr team is making any further gcr-3 releases. It's not yet clear what is happening in future versions, such as gcr-4, as it deleted that file, and it is presumably moving to Seahorse. Seahorse's nielsdg/gtk4 branch with that change was last updated mid-2022 and has not yet been merged to main.

Having applied those patches on Xubuntu 23.04, I can import certificates perfectly. However after import I have to restart Seahorse to see the new certificates, which seems like some other bug.