this derivation will be built:
  /nix/store/ffx65mihl6fcsi1prmhx2f7ih7pfyhvi-treefmt-check.drv
building '/nix/store/ffx65mihl6fcsi1prmhx2f7ih7pfyhvi-treefmt-check.drv'
treefmt-check> treefmt v2.4.0traversed 926 files
treefmt-check> emitted 229 files for processing
treefmt-check> formatted 229 files (0 changed) in 569ms