I’ve been working on bringing up NixOS on Pocket Reform with imx8mq. I’ve got things booting on 6.9.7, but haven’t finished testing all of the hardware. This is all based on @lykso’s amazing work to bring up NixOS on the original reform, but based around the 6.9 kernel with some tweaks for Pocket with imx8mp.
The WIP merge request is here if anyone is interested in helping with this.