this derivation will be built:
  /nix/store/mjh50yw57wvjnqa1z98zkfmrj32fk72c-treefmt-check.drv
building '/nix/store/mjh50yw57wvjnqa1z98zkfmrj32fk72c-treefmt-check.drv'
treefmt-check> treefmt v2.6.0traversed 85 files
treefmt-check> emitted 69 files for processing
treefmt-check> formatted 69 files (0 changed) in 955ms