these 2 derivations will be built:
  /nix/store/p5z5kk1jiz18kmcpkiah2wnl4m3my5sq-nixos-test-driver-pg_hashids.drv
  /nix/store/xn1c4r4mvnc630clgyh4mrfivm22j6kx-vm-test-run-pg_hashids.drv