this derivation will be built:
  /nix/store/66l4lax3sp4j186rq3dn61sq7mfqhrmz-treefmt-check.drv
bld4: building 66l4lax3sp4j186rq3dn61sq7mfqhrmz-treefmt-check.drv
traversed 517 files
emitted 354 files for processing
formatted 354 files (0 changed) in 5.333s