I see now that these are included in neuron-main tree, but it was never installed on my rpi because the install script failed.
The following packages have unmet dependencies: unipi-kernel-modules : Depends: raspberrypi-kernel (= 1:1.20221104-1) but 1:1.20230106-1 is to be installed E: Unable to correct problems, you have held broken packages. Cleaning temporary files Cleaning temporary filesI am guessing you need a better way of determining the platform, otherwise this is going to break each time a new rpi kernel is released before you have a chance to build the modules package...
If anyone needs a workaround, install like this:
wget -qO - https://repo.unipi.technology/debian/raspberry-install.sh | sed s/unipi-kernel-modules/unipi-kernel-modules-dkms/ | bash