this derivation will be built:
  /nix/store/z2z1k6gam7ci0d6kqnfshhm0jkd4y9ya-treefmt-check.drv
building '/nix/store/z2z1k6gam7ci0d6kqnfshhm0jkd4y9ya-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 604ms