fix custom formatter after fmt update

Author: Totto16

src/input/guid.hpp

@@ -44,8 +44,8 @@ namespace sdl {
 
 
 template<>
-struct fmt::formatter<sdl::GUID> : formatter<std::string> {
-    auto format(const sdl::GUID& guid, format_context& ctx) {
+struct fmt::formatter<sdl::GUID> : fmt::formatter<std::string> {
+    auto format(const sdl::GUID& guid, format_context& ctx) const {
         return formatter<std::string>::format(guid.to_string(), ctx);
     }
 };

src/input/input.hpp

@@ -13,6 +13,7 @@
 #include "manager/service_provider.hpp"
 
 
+#include <fmt/base.h>
 #include <fmt/format.h>
 #include <memory>
 #include <vector>
@@ -116,6 +117,7 @@ namespace input {
     struct InputSettings {
 
         template<typename T>
+            requires fmt::formattable<T>
         [[nodiscard]] static helper::expected<void, std::string> has_unique_members(const std::vector<T>& to_check) {
             std::vector<T> already_bound{};
 

src/manager/sdl_controller_key.hpp

@@ -28,8 +28,8 @@ namespace sdl {
 } // namespace sdl
 
 template<>
-struct fmt::formatter<sdl::ControllerKey> : formatter<std::string> {
-    auto format(const sdl::ControllerKey& key, format_context& ctx) {
+struct fmt::formatter<sdl::ControllerKey> : fmt::formatter<std::string> {
+    auto format(const sdl::ControllerKey& key, format_context& ctx) const {
         return formatter<std::string>::format(key.to_string(), ctx);
     }
 };

src/manager/sdl_key.hpp

@@ -86,8 +86,8 @@ namespace sdl {
 } // namespace sdl
 
 template<>
-struct fmt::formatter<sdl::Key> : formatter<std::string> {
-    auto format(const sdl::Key& key, format_context& ctx) {
+struct fmt::formatter<sdl::Key> : fmt::formatter<std::string> {
+    auto format(const sdl::Key& key, format_context& ctx) const {
         return formatter<std::string>::format(key.to_string(), ctx);
     }
 };