We probably need to continue to support ['Foo', 'doBar'] style of callables :/ I'l look into a possible fix of your issue, probably by modifying DependencyResolver.

Could you try to revert all your changes from #231 and modify DependencyResolver around line 160 so that it calls ->isCallable() only when the first array item is ClassConstFetch with ::class? Thanks.

Yeah, I think there are probably still a lot of legit 'Class\\String' literals out there. But if we change DependencyResolver, won't it just move the problem? I don't understand the internals as well as you do, but I'm guessing something is still going to use that resolved type and also expect ['Closure', 'bind'] to be callable, right?

If someone else asks about the type being isCallable() then yes but at that point you're probably trying to use the array as an actual callable.