this derivation will be built:
  /nix/store/9kjgjgvkxszpc6my4njy3534bs1v3ic8-treefmt-check.drv
building '/nix/store/9kjgjgvkxszpc6my4njy3534bs1v3ic8-treefmt-check.drv'
treefmt-check> treefmt v2.4.0traversed 943 files
treefmt-check> emitted 237 files for processing
treefmt-check> formatted 237 files (0 changed) in 640ms