this derivation will be built:
  /nix/store/16prg0kx3rz7gc1fy9fz1ks98g5xym6j-treefmt-check.drv
building '/nix/store/16prg0kx3rz7gc1fy9fz1ks98g5xym6j-treefmt-check.drv'
treefmt-check> treefmt v2.4.0traversed 939 files
treefmt-check> emitted 234 files for processing
treefmt-check> formatted 234 files (0 changed) in 635ms