this derivation will be built:
  /nix/store/kfgz2arswlwql4bpyhrc85mp4azda4k6-treefmt-check.drv
building '/nix/store/kfgz2arswlwql4bpyhrc85mp4azda4k6-treefmt-check.drv'
treefmt-check> treefmt v2.4.0traversed 949 files
treefmt-check> emitted 240 files for processing
treefmt-check> formatted 240 files (0 changed) in 3.948s