this derivation will be built:
  /nix/store/cfcac1dn48pi7q8pr5zavv4kkwimwvc7-treefmt-check.drv
building '/nix/store/cfcac1dn48pi7q8pr5zavv4kkwimwvc7-treefmt-check.drv'...
treefmt v2.4.0traversed 19 files
emitted 12 files for processing
formatted 12 files (0 changed) in 260ms