these 3 derivations will be built:
  /nix/store/w2229m7iv04vchxj8c9x96xnfhrgva58-treefmt.toml.drv
  /nix/store/q9fch3d316562rgf0088j7l5dbm5r6pg-treefmt.drv
  /nix/store/jfbjfwvj5kzxd06dr4pq6n239mjafnnq-treefmt-check.drv