my build system of choice is CMake. I see that others are working on Pants with C++. I wonder what the difference is between Nx and Pants. Neither support CMake directly but both claim to be technology agnostic. I am hoping to avoid Nx because it uses Javascript. I'm more comfortable with Python.

I'm starting to look into a plugin for some basic CMake support - it's a bit complicated, but a large part of my work is Python and C++ in monorepos - so Pants seems to fit the bill pretty well.