these 2 derivations will be built:
  /nix/store/d03i90nq4gaglzfni9pf7c0pix6rr5ir-nixos-test-driver-pg_partman.drv
  /nix/store/q2ryd40790cvadaf19dp5hd6cf345ris-vm-test-run-pg_partman.drv