this derivation will be built:
  /nix/store/6iwvd9cg30mh3yrc77r5l9zil4mf3nzm-treefmt-check.drv
building '/nix/store/6iwvd9cg30mh3yrc77r5l9zil4mf3nzm-treefmt-check.drv'
treefmt-check> treefmt v2.6.0traversed 91 files
treefmt-check> emitted 48 files for processing
treefmt-check> formatted 48 files (0 changed) in 326ms