this derivation will be built:
  /nix/store/gk1kkbp1agvgfii6x72gafdrf8rwiswi-treefmt-check.drv
bld4: building gk1kkbp1agvgfii6x72gafdrf8rwiswi-treefmt-check.drv
traversed 517 files
emitted 354 files for processing
formatted 354 files (0 changed) in 8.539s