I think preventing. I don't think Ruby is a bad language, but I've never worked anywhere it was a first or even second class language. I like AsciiDoc, but it's a hard sell to convince people to manage an entire other language toolchain used for nothing but AsciiDoc. I don't think the distro packaged it, or maybe not a recent enough version, but I could be wrong.

It's already hard enough to get people to switch documentation formats, needing to manage another language for it is just a bridge too far everywhere I've worked. It would be an easier sell if it were statically compiled, or at least in an interpreted language we already used (Python or JS most places).