Puppet was just built with Ruby (and later re-written, I think?), in all my years interacting with it I never actually wrote any Ruby.
Chef you obviously had to, but my impression is that the DSL is so extensive you might as well be writing something that's not Ruby.
Maybe this says something about the power of Ruby, but I don't feel like these tools contributed to the language's popularity or ecosystem - definitely not the way RoR did.