this derivation will be built:
  /nix/store/pakqdx6pcj07z6gza2pbgri7ng0j6w7i-treefmt-check.drv
building '/nix/store/pakqdx6pcj07z6gza2pbgri7ng0j6w7i-treefmt-check.drv'
treefmt-check> treefmt v2.6.0traversed 17 files
treefmt-check> emitted 8 files for processing
treefmt-check> formatted 8 files (0 changed) in 512ms