Heh, looks like cmake-code-generators are all the rage these days ;)

Here's my feeble attempt using Deno as base (it's extremely opinionated though and mostly for personal use in my hobby projects):

https://github.com/floooh/fibs

One interesting chicken-egg-problem I couldn't solve is how to figure out the C/C++ toolchain that's going to be used without running cmake on a 'dummy project file' first. For some toolchain/IDE combos (most notably Xcode and VStudio) cmake's toolchain detection takes a lot of time unfortunately.