Merge pull request #823 from IntersectMBO/mheinzel/prototype-empty-levels
ScheduledMerges: allow empty levels
ScheduledMerges: allow empty levels
From https://github.com/IntersectMBO/cardano-node at 8cddc6c5ff1c70a27b79415d7be829d4d5ffc894
* Add ./script/nixpkgs-fmt.sh for non-Nix users. * Add nixpkgs-fmt in our Nix pre-commit hook. * Add Github CI check
Co-authored-by: Fraser Murray <[email protected]>