this derivation will be built:
  /nix/store/k13a718iicwpnz4d9v89r35nmg21mica-treefmt-check.drv
bld4: building k13a718iicwpnz4d9v89r35nmg21mica-treefmt-check.drv
traversed 517 files
emitted 354 files for processing
formatted 354 files (0 changed) in 6.137s