Hi, I want to determine if a trait composition is different than other, for example: newClass traitComposition = oldClass traitComposition But I didn't find an implementation. I imagine the simple implementation that checks that all of its components are equal recursively. The components are instances of either Trait, TraitAlias or TraitExclusion, and it should be simple to define = on each of them. Do experts on traits agree? I can open an issue and propose a slice. This arose when looking into issue 12157, where the problem is that ClassModifiedClassDefinition is always announced because the trait composition *may* have changed. This way, ClassModifiedClassDefinition is announced even when it was a class creation. We could also workaround the lack of trait composition equality by comparing their 'asString's... Bests, MartÃn