these 2 derivations will be built:
  /nix/store/hdcmpwy59jy3h7qy80zmff7dqwyvp6qj-treefmt-with-config-2.6.0.drv
  /nix/store/p64aa82gpnn8sg7ckh712fhjj9jwwkxm-treefmt-with-config-check.drv