I have recently started using Rake for my personal projects, mainly because I am not into make anymore and prefer to avoid learning a custom language just for builds.
However, based on a quick google, there don't seem to be any many non-ruby projects using rake. And certainly none with any recall value.
Am I right? Are there any non ruby projects using Rake? And why is rake lagging behind?
EDIT: By lagging behind, why are there no major opensource project using Rake? What does Rake lack vs Cmake, for instance?