Do you have any experience with cSound ?
ChucK is kinda hard to make a wrapper for.. So you have to run it parallel with other controller or audio workstations... At least as far as I've learned. But I've only been into ChucK for a few months.
no I don't. I only dabble with these languages for fun. as a musician before a programmer, I find live coding very novel, but never the optimal way to produce live music.
so I know this is not the answer you are looking for at all, and I know people will argue with this, but, my 2 cents: if you find yourself trying to sync multiple live coding environments, start a band, or learn something like FL Studio.
music is solely about output. the means to create it are irrelevant.