this derivation will be built:
  /nix/store/814s7pmbcc9gws11lzpvl9p2rsyysyvg-treefmt-check.drv
building '/nix/store/814s7pmbcc9gws11lzpvl9p2rsyysyvg-treefmt-check.drv'
treefmt-check> treefmt v2.6.0traversed 91 files
treefmt-check> emitted 48 files for processing
treefmt-check> formatted 48 files (0 changed) in 294ms