diff --git a/deps/ox/src/ox/std/CMakeLists.txt b/deps/ox/src/ox/std/CMakeLists.txt
index ae2b9410..67de0f90 100644
--- a/deps/ox/src/ox/std/CMakeLists.txt
+++ b/deps/ox/src/ox/std/CMakeLists.txt
@@ -109,6 +109,7 @@ install(
 		error.hpp
 		fmt.hpp
 		hardware.hpp
+		hash.hpp
 		hashmap.hpp
 		heapmgr.hpp
 		ignore.hpp
diff --git a/src/olympic/keel/include/keel/assetmanager.hpp b/src/olympic/keel/include/keel/assetmanager.hpp
index a857879d..5c22a702 100644
--- a/src/olympic/keel/include/keel/assetmanager.hpp
+++ b/src/olympic/keel/include/keel/assetmanager.hpp
@@ -196,15 +196,15 @@ class AssetManager {
 		template<typename T>
 		class AssetTypeManager: public AssetTypeManagerBase {
 			public:
-				using Loader = std::function<ox::Result<T>(ox::StringView assetId)>;
+				using Loader = std::function<ox::Result<T>(ox::StringViewCR assetId)>;
 			private:
 				Loader m_loader{};
 				ox::HashMap<ox::String, ox::UPtr<AssetContainer<T>>> m_cache;
 
 			public:
-				AssetTypeManager(Loader loader) noexcept: m_loader(loader) {}
+				AssetTypeManager(Loader &&loader) noexcept: m_loader(std::move(loader)) {}
 
-				ox::Result<AssetRef<T>> getAsset(ox::StringView const assetId) const noexcept {
+				ox::Result<AssetRef<T>> getAsset(ox::StringViewCR assetId) const noexcept {
 					OX_REQUIRE(out, m_cache.at(assetId));
 					if (!out || !*out) {
 						return ox::Error(1, "asset is null");
@@ -212,7 +212,7 @@ class AssetManager {
 					return AssetRef<T>(out->get());
 				}
 
-				ox::Result<AssetRef<T>> loadAsset(ox::StringView const assetId) noexcept {
+				ox::Result<AssetRef<T>> loadAsset(ox::StringViewCR assetId) noexcept {
 					auto &p = m_cache[assetId];
 					OX_REQUIRE_M(obj, m_loader(assetId));
 					if (!p) {
@@ -224,7 +224,7 @@ class AssetManager {
 					return AssetRef<T>(p.get());
 				}
 
-				ox::Error reloadAsset(ox::StringView const assetId) noexcept {
+				ox::Error reloadAsset(ox::StringViewCR assetId) noexcept {
 					auto &p = m_cache[assetId];
 					OX_REQUIRE_M(obj, m_loader(assetId));
 					if (!p) {
@@ -247,7 +247,7 @@ class AssetManager {
 		};
 
 		ox::HashMap<ox::String, ox::UPtr<AssetTypeManagerBase>> m_assetTypeManagers;
-		ox::HashMap<ox::String, ox::Signal<ox::Error(ox::StringView assetId)>> m_fileUpdated;
+		ox::HashMap<ox::String, ox::Signal<ox::Error(ox::StringViewCR assetId)>> m_fileUpdated;
 
 		template<typename T>
 		ox::Result<AssetTypeManager<T>*> getTypeManager() noexcept {
@@ -273,18 +273,18 @@ class AssetManager {
 		}
 
 		template<typename T>
-		ox::Result<AssetRef<T>> getAsset(ox::StringView assetId) noexcept {
+		ox::Result<AssetRef<T>> getAsset(ox::StringViewCR assetId) noexcept {
 			OX_REQUIRE(m, getTypeManager<T>());
 			return m->getAsset(assetId);
 		}
 
-		ox::Error reloadAsset(ox::StringView assetId) noexcept {
+		ox::Error reloadAsset(ox::StringViewCR assetId) noexcept {
 			m_fileUpdated[assetId].emit(assetId);
 			return {};
 		}
 
 		template<typename T>
-		ox::Result<AssetRef<T>> loadAsset(ox::StringView assetId) noexcept {
+		ox::Result<AssetRef<T>> loadAsset(ox::StringViewCR assetId) noexcept {
 			OX_REQUIRE(m, getTypeManager<T>());
 			OX_REQUIRE(out, m->loadAsset(assetId));
 			m_fileUpdated[assetId].connect(m, &AssetTypeManager<T>::reloadAsset);