Hardware

Marchyo enables common hardware support (Bluetooth, Thunderbolt, power management) by default. Some peripheral-specific support is opt-in.

Available options

Option	Default	Description
marchyo.hardware.camera.waitForAccess	desktop	Delay WirePlumber at login until camera devices are accessible
marchyo.hardware.ddc.enable	true	DDC/CI external-monitor brightness (ddcutil, i2c bus + group), desktop-only

Logitech wireless

Enable support for Logitech Unifying / Bolt receivers and the Solaar management GUI with the NixOS option:

{
  programs.solaar.enable = true;
}

This also turns on hardware.logitech.wireless, so you can pair devices and tune per-device settings, and arms the shell’s Solaar fallback for device batteries. (marchyo.hardware.logitech.enable is a deprecated alias.)

Camera access at login

libcamera opens each camera’s media device once, when WirePlumber starts. At login the user manager can start WirePlumber a moment before logind grants the session access to the seat’s devices, which leaves the camera missing until WirePlumber restarts. With marchyo.hardware.camera.waitForAccess (on with the desktop), WirePlumber waits up to five seconds for the uaccess media devices to become readable. Opt out with marchyo.hardware.camera.waitForAccess = false.

External-monitor brightness (DDC/CI)

Enabled by default with the desktop. Marchyo loads the i2c-dev module and its udev rules (hardware.i2c), installs ddcutil, and adds Marchyo users to the i2c group so brightness/contrast of external DP/HDMI/VGA displays can be set over the i2c bus. Laptop panels use backlight controls instead. Opt out with:

{
  marchyo.hardware.ddc.enable = false;
}