this derivation will be built:
  /nix/store/31qvqfx3hgd95c88hy47zzg2yg78fvsp-treefmt-check.drv
building '/nix/store/31qvqfx3hgd95c88hy47zzg2yg78fvsp-treefmt-check.drv'
treefmt-check> treefmt v2.6.0traversed 931 files
treefmt-check> emitted 232 files for processing
treefmt-check> formatted 232 files (0 changed) in 631ms