sysfs node is read-only (0444), even root cannot write.
The AXP228 PMU manages power path in hardware.
Practical fix: disconnect batteries during heavy builds.
The nixpkgs attribute for userspace GPIO tools is 'libgpiod',
not 'gpiod'. This provides the gpioset binary used by the
GPIO 23 internal USB hub service.
Disko auto-generates fileSystems with by-partlabel paths, but
for manual install via loop devices we need by-label paths.
mkForce ensures our paths win during evaluation.
disko module defines options under `disko.devices.disk.*`, not
`disk.*`. This was causing evaluation error:
"The option 'disk' does not exist. Did you mean 'disko'?"
- Add disko flake input + partition config (/boot/firmware, /, /home)
- Add cm5-backlight-fix service as display fallback
- Add enable-gpio23-usb-hub service for internal USB hub
- Add mt7921u kernel module for MediaTek AC1200 WiFi
- Add gpiod package for GPIO userspace control
