Is it possible to request a specific version for a flake input? One of my inputs (emacs-overlay) is locked to a very recent commit which is problematic, and I’d like to lock it to a known good commit. It seems that I could manually update the flake.lock file, but this is a bit painful and error-prone.
Yup, you can use
You can also pin to a branch or a tag. See examples
thanks, @rehno. Just so I understand, you are recommending I specify the revision in the flake input instead of trying to manage the pinning only via the lock file?
The lockfiles pin will be overwritten on the next
nix flake update, thats why a pin through the
inputs section is usually prefered. especially as the
flake.lock also holds additional metadata like the date of the commit or its content sha, which you would need to keep correct on your own as well.
Thanks @NobbZ. FWIW, I just tried this and
nix flake lock --update-input emacs-overlay works as I wanted, downgrading the input to the version I specified and locking it.