{ config, lib, ... }: with lib; { config = { pam.sessionVariables = { V1 = "v1"; V2 = "v2-${config.pam.sessionVariables.V1}"; }; nmt.script = '' assertFileExists home-files/.pam_environment assertFileContent \ home-files/.pam_environment \ ${./session-variables-expected.txt} ''; }; }