this derivation will be built:
  /nix/store/c4jsl17sf1lcb1ighj5ys2w4a4yarkbf-treefmt-check.drv
bld4: building c4jsl17sf1lcb1ighj5ys2w4a4yarkbf-treefmt-check.drv
traversed 517 files
emitted 354 files for processing
formatted 354 files (0 changed) in 13.831s