these 2 derivations will be built:
  /nix/store/dx53fi7zyn7wqbcg6b693jgcg1n3yavi-nixos-test-driver-pg_graphql.drv
  /nix/store/xq1nxqcjy86xssywz7qa0i2ikgaxk6g4-vm-test-run-pg_graphql.drv