these 2 derivations will be built:
  /nix/store/7av39mxq4j3dh58ijm8qavqs5i6d920v-nixos-test-driver-pg_hashids.drv
  /nix/store/c40x1y6b5birdpqyh890nvrxcld2z689-vm-test-run-pg_hashids.drv