default to EurKEY layout

src/main.rs

@@ -304,7 +304,7 @@ fn build_keyboard_page(stack: &Stack) -> StackPage {
     let search_exp = gtk::PropertyExpression::new(gtk::StringObject::static_type(), None::<gtk::Expression>, "string");
     dropdown.set_expression(Some(search_exp));
     dropdown.set_search_match_mode(gtk::StringFilterMatchMode::Substring);
-    let default_index = layout_vals.iter().position(|v| v.layout == "us" && v.variant == "").unwrap();
+    let default_index = layout_vals.iter().position(|v| v.layout == "eu" && v.variant == "").unwrap();
     dropdown.set_selected(default_index as u32);
 
     let layout_label = &Label::new(Some("Please select your keyboard layout:"));