It uses IMX 8m plus, there is already a nerves system for board using that SoC https://github.com/redwirelabs/nerves_system_iot_gate_imx8plus

This video https://www.youtube.com/watch?v=OytifKkGLeg contains information on how to go the information from yocto and set up nerves system. There is probably yocto build for the board you are planning to use.

EDIT: update link to a newer nerves system

That is an older one. The work from Abelino’s talk would be more reflected here: GitHub - redwirelabs/nerves_system_iot_gate_imx8plus: Nerves system for the Compulab IOT-GATE-IMX8PLUS · GitHub

are known for their solid industrial performance. You might want to check if the LTE-M modem and WiFi HaLow drivers play nicely with Nerves’ networking stack — sometimes kernel module compatibility can be tricky.

If you haven’t already, take a look at the Nerves System BR docs and see if there’s an existing BSP you can extend for VeniceFLEX. Also, consider posting any device tree or driver notes you find — others working on HaLow support would definitely appreciate it!

Would love to hear how your setup performs once it’s up and running.