this derivation will be built:
  /nix/store/vp378wn7rfr37n4dk0z3ya09fdaa90xk-treefmt-check.drv
building '/nix/store/vp378wn7rfr37n4dk0z3ya09fdaa90xk-treefmt-check.drv'
treefmt-check> treefmt v2.5.0traversed 17 files
treefmt-check> emitted 8 files for processing
treefmt-check> formatted 8 files (0 changed) in 54ms