@prologic @bmallred Ah, I just found this, didn’t see it before:

https://restic.net/#compatibility

So, yeah, they do use semver and, yes, they’re not at 1.0.0 yet, so things might break on the next restic update … but they “promise” to not break things too lightheartedly. Hm, well. 😅 Probably doesn’t make a big difference (they don’t say “don’t use this software until we reach 1.0.0”).