Could you try explaining this again? In particular, what is the code outside of Moo that causes $_ to exhibit this problem? It probably doesn't help that I'm not clear on how 'undef' ends up in @roles (is the code that does that shown anywhere in this thread?). I'm also unclear how the 'uninitialized' warning causes the Role::Tiny module to fail (leading to a "Compilation failed") without producing an error message.
Thank you (in advance).
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