this derivation will be built:
  /nix/store/x27lk35q5f7hh23x8n7xqdrpjklqvy27-treefmt-check.drv
bld4: building x27lk35q5f7hh23x8n7xqdrpjklqvy27-treefmt-check.drv
traversed 517 files
emitted 354 files for processing
formatted 354 files (0 changed) in 8.283s