{ ... }: { wayland.windowManager.hyprland = { enable = true; package = null; settings = { cursor = { enable_hyprcursor = true; sync_gsettings_theme = true; }; }; }; test.asserts.warnings.expected = ['' xdg-desktop-portal 1.17 reworked how portal implementations are loaded, you should either set `xdg.portal.config` or `xdg.portal.configPackages` to specify which portal backend to use for the requested interface. https://github.com/flatpak/xdg-desktop-portal/blob/1.18.1/doc/portals.conf.rst.in If you simply want to keep the behaviour in < 1.17, which uses the first portal implementation found in lexicographical order, use the following: xdg.portal.config.common.default = "*"; '']; test.asserts.warnings.enable = true; nmt.script = '' config=home-files/.config/hypr/hyprland.conf assertFileExists "$config" ''; }