{ config, lib, pkgs, ... }: with lib; let darwinTestApp = pkgs.runCommandLocal "target-darwin-example-app" { } '' mkdir -p $out/Applications touch $out/Applications/example-app ''; in { config = { home.packages = [ darwinTestApp ]; nmt.script = '' assertFileExists 'home-files/Applications/Home Manager Apps/example-app' ''; }; }