macOS doesn't have user namespacing, so the gid of the builder needs to be nixbld. The logic got "has sandboxing enabled" confused with "has user namespaces". Fixes #7529.
macOS doesn't have user namespacing, so the gid of the builder needs to be nixbld. The logic got "has sandboxing enabled" confused with "has user namespaces". Fixes #7529.