these 2 derivations will be built:
  /nix/store/vwxb2z7qakkribg4ajqidfp42h4z3zam-treefmt-with-config-2.6.0.drv
  /nix/store/2g4h2hswa9npkv9l5hg5wggadgzfmpp8-treefmt-with-config-check.drv