02:20 <odigity> How is it possible that the minitest repo and gem don't contain a .gemspec, but I'm still able to install it, and a .gemspec magically appears in my /usr/local/bundle/specifications/ directory?

02:36 <odigity> Ok, I think I found the answer -- they've using a gem called "hoe" (which they also created) to, amongst other things, autogenerate a gemspec at build time.