these 2 derivations will be built:
  /nix/store/rnjj9p9pfx7gwxazqlg34jmnn5b24vw6-nixos-test-driver-pg_graphql.drv
  /nix/store/8w2zdiqhwkn8paqhzdv6q3dxlmwhkk4y-vm-test-run-pg_graphql.drv