these 2 derivations will be built:
  /nix/store/nnagfxgm4y9brbjkx81akidjhjihzjqy-nixos-test-driver-wrappers-regression-PSQL-1387.drv
  /nix/store/2vkgcfi8x5a6vd38gi4zz36ffcb2d2gn-vm-test-run-wrappers-regression-PSQL-1387.drv