Got it, thanks everyone. Just one small point to add - I'm not actually directly concerned with Execs here. If you look at my original example, I was needing to do a conditional check like "if directory exists then...", and my Exec-based solution for it is just an ugly workaround. I understand the puppet philosophy here is focused on being declarative, but it's just extremely common that we don't have the pleasure of working in a purely declarative environment. As such I think it'd be nice to see unless/requires/etc evolve further.
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