these 2 derivations will be built:
  /nix/store/0sh7yxsz8lvc4dm2g74nzws7hwy5f43j-nixos-test-driver-pgmq.drv
  /nix/store/sxzygzhahbxg5d7g1ry6kmmw9rnx8hlk-vm-test-run-pgmq.drv