hideo-about: Converted to modules.

src/apps/hideo-about/app.cpp

@@ -1,3 +1,5 @@
+module;
+
 #include <karm-base/witty.h>
 #include <karm-image/loader.h>
 #include <karm-kira/about-dialog.h>
@@ -11,9 +13,11 @@
 #include <mdi/information.h>
 #include <mdi/license.h>
 
+export module Hideo.About;
+
 namespace Hideo::About {
 
-Ui::Child app() {
+export Ui::Child app() {
     return Kr::scaffold({
         .icon = Mdi::INFORMATION,
         .title = "About"s,

src/apps/hideo-about/main/main.cpp

@@ -1,7 +1,7 @@
 #include <karm-sys/entry.h>
 #include <karm-ui/app.h>
 
-#include "../app.h"
+import Hideo.About;
 
 Async::Task<> entryPointAsync(Sys::Context& ctx) {
     co_return Ui::runApp(ctx, Hideo::About::app());

src/libs/karm-meta/pack.h

@@ -11,19 +11,28 @@ namespace Karm::Meta {
 template <typename T, typename... Ts>
 concept Contains = (Same<T, Ts> or ...);
 
-template <typename...>
-inline constexpr usize _indexOf = 0;
+template <typename T, typename... Ts>
+struct _IndexOf;
 
-template <typename T, typename First>
-inline constexpr usize _indexOf<T, First> = 0;
+template <typename T, Meta::Same<T> First>
+struct _IndexOf<T, First> {
+    static constexpr usize value = 0;
+};
 
 template <typename T, typename First, typename... Rest>
-inline constexpr usize _indexOf<T, First, Rest...> = Same<T, First> ? 0 : _indexOf<T, Rest...> + 1;
+struct _IndexOf<T, First, Rest...> {
+    static constexpr usize value = [] {
+        if constexpr (Same<T, First>)
+            return 0;
+        else
+            return 1 + _IndexOf<T, Rest...>::value;
+    }();
+};
 
 template <typename T, typename... Ts>
-    requires Contains<T, Ts...>
-static consteval usize indexOf() {
-    return _indexOf<T, Ts...>;
+    requires(Contains<T, Ts...>)
+consteval usize indexOf() {
+    return _IndexOf<T, Ts...>::value;
 }
 
 template <typename...>