this derivation will be built:
  /nix/store/da6fhvdi1jybs3lx89majx2dkmpca486-treefmt-check.drv
bld4: building da6fhvdi1jybs3lx89majx2dkmpca486-treefmt-check.drv
traversed 517 files
emitted 354 files for processing
formatted 354 files (0 changed) in 8.44s