:corro:

src/lib.rs

@@ -0,0 +1,18 @@
+/// A type that can be identified by a unique `AccursedUnutterableTypeId`.
+///
+/// # Safety
+/// This trait is only allowed to be implemented by the derive macro.
+pub unsafe trait AccursedUnutterablyTypeIdentified: 'static {
+    fn type_id() -> AccursedUnutterableTypeId;
+}
+
+pub struct AccursedUnutterableTypeId(u64);
+
+impl AccursedUnutterableTypeId {
+    pub fn of<T>() -> Self
+    where
+        T: AccursedUnutterablyTypeIdentified,
+    {
+        T::type_id()
+    }
+}