home-manager/tests/modules/misc/qt/qt-platform-theme-gtk3.nix

{
  qt = {
    enable = true;
    platformTheme.name = "gtk3";
  };

  nmt.script = ''
    assertFileRegex home-path/etc/profile.d/hm-session-vars.sh \
      'QT_QPA_PLATFORMTHEME="gtk3"'
    assertFileRegex home-path/etc/profile.d/hm-session-vars.sh \
      'QT_PLUGIN_PATH'
    assertFileRegex home-path/etc/profile.d/hm-session-vars.sh \
      'QML2_IMPORT_PATH'
  '';
}