Add fundamental/

rt/include/typon/fundamental/meta.hpp

+#ifndef TYPON_META_HPP_INCLUDED
+#define TYPON_META_HPP_INCLUDED
+
+
+namespace typon::fdt::meta
+{
+
+  template <template <typename ...> typename T>
+  struct lazy
+  {
+    template <typename... Args>
+    using type = T<Args...>;
+  };
+
+}
+
+
+#endif // TYPON_META_HPP_INCLUDED

rt/include/typon/fundamental/scope.hpp

+#ifndef TYPON_FUNDAMENTAL_SCOPE_HPP_INCLUDED
+#define TYPON_FUNDAMENTAL_SCOPE_HPP_INCLUDED
+
+#include <concepts>
+
+
+namespace typon::fdt
+{
+
+  template <std::invocable<> F>
+  struct defer
+  {
+    F _f;
+
+    ~defer()
+    {
+      _f();
+    }
+  };
+
+  template <std::invocable<> F>
+  defer(F) -> defer<F>;
+
+}
+
+
+#endif // TYPON_FUNDAMENTAL_SCOPE_HPP_INCLUDED