these 2 derivations will be built:
  /nix/store/ddgz180mqmz0zgrzkqg08w83w0pf263m-nixos-test-driver-pg_graphql.drv
  /nix/store/bpjb8hrrh301a4yiknig2zs16ssrhxks-vm-test-run-pg_graphql.drv