this derivation will be built:
  /nix/store/0a1k3s1c9ajwn77awpwp7m3gsfcnknx2-treefmt-check.drv
building '/nix/store/0a1k3s1c9ajwn77awpwp7m3gsfcnknx2-treefmt-check.drv'
treefmt-check> treefmt v2.4.0traversed 922 files
treefmt-check> emitted 228 files for processing
treefmt-check> formatted 228 files (0 changed) in 684ms