these 3 derivations will be built:
  /nix/store/5464z8qn92x1hriqzyjgfqdg43qkazmv-treefmt.toml.drv
  /nix/store/qa7z55pg46n9y6kkjp9wh4w69v9rg3m7-treefmt.drv
  /nix/store/yaqhcbw856yzxn1cwhxigxf389fi43dh-treefmt-check.drv