this derivation will be built:
  /nix/store/bis40f2bp9cw37rygkyr224j5hvrws72-treefmt-check.drv
bld4: building bis40f2bp9cw37rygkyr224j5hvrws72-treefmt-check.drv
traversed 517 files
emitted 354 files for processing
formatted 354 files (0 changed) in 7.651s