this derivation will be built:
  /nix/store/qil5c6niziwr4076c9s6sjsg41p3hkfl-treefmt-check.drv
building '/nix/store/qil5c6niziwr4076c9s6sjsg41p3hkfl-treefmt-check.drv'
treefmt-check> treefmt v2.6.0traversed 84 files
treefmt-check> emitted 68 files for processing
treefmt-check> formatted 68 files (0 changed) in 969ms