these 2 derivations will be built:
  /nix/store/41brm904k96lsfypcax8yxnb6cn0cs7h-herdr-eternal-deps-0.1.0.drv
  /nix/store/r7bxrl1py2zh6c5wrsz50kcj4ac5kh6p-herdr-eternal-test-0.1.0.drv