this derivation will be built:
  /nix/store/9kb1ixi53b35lzcgn3lli7xhmk2ygc4y-treefmt-check.drv
building '/nix/store/9kb1ixi53b35lzcgn3lli7xhmk2ygc4y-treefmt-check.drv'
treefmt-check> treefmt v2.4.0traversed 935 files
treefmt-check> emitted 234 files for processing
treefmt-check> formatted 234 files (0 changed) in 640ms