The Darktable snap (darktable-kyrofa) is terribly out-of-date. I’d like to bring it up to the latest release, but I could use your help verifying that things still work. If you’re a photographer, particularly if you have some experience using Darktable, mind putting it through its paces? v2.2.4snap1-rc1 is in the candidate channel:
$ sudo snap install --candidate darktable-kyrofa
Please let me know if you run into any issues.
Update: v2.2.4snap1 has now been released into the stable channel.