Raspberry Pi NixOS on BTRFS Root?

For context, here’s the error I get on bootup, just after it looks like it’s going to work and Retrieving file: /@boot/extlinux/../nixos/.../linux:

ERROR: arch-specific fdt fixup failed
 - must RESET the board to recover.

FDT creation failed!
resetting ...

Immediately after I get a blue screen and a reboot.