this derivation will be built:
  /nix/store/k59gqxb3qfldxxd83msamqh02hnby161-treefmt-check.drv
bld4: building k59gqxb3qfldxxd83msamqh02hnby161-treefmt-check.drv
traversed 517 files
emitted 354 files for processing
formatted 354 files (0 changed) in 27.356s