this derivation will be built:
  /nix/store/ngqq41k70mx1vsaw8dxqqx6xhr9bg2gm-treefmt-check.drv
building '/nix/store/ngqq41k70mx1vsaw8dxqqx6xhr9bg2gm-treefmt-check.drv'
treefmt-check> treefmt v2.6.0traversed 72 files
treefmt-check> emitted 31 files for processing
treefmt-check> formatted 31 files (0 changed) in 213ms