this derivation will be built:
  /nix/store/8sh56hnajx91cdzycz92hfn02avmm1j2-treefmt-check.drv
building '/nix/store/8sh56hnajx91cdzycz92hfn02avmm1j2-treefmt-check.drv'
treefmt-check> treefmt v2.6.0traversed 72 files
treefmt-check> emitted 50 files for processing
treefmt-check> formatted 50 files (0 changed) in 96ms