nixos-hardware/raspberry-pi/4/pkgs-overlays.nix

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{ config, lib, ... }:
let
cfg = config.hardware.raspberry-pi."4".apply-overlays-dtmerge;
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dt_ao_overlay = _final: prev: {
deviceTree = prev.deviceTree // {
applyOverlays = _final.callPackage ./apply-overlays-dtmerge.nix { };
};
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};
in {
options.hardware = {
raspberry-pi."4".apply-overlays-dtmerge = {
enable = lib.mkEnableOption ''
replace deviceTree.applyOverlays implementation to use dtmerge from libraspberrypi.
this can resolve issues with applying dtbs for the pi.
'';
};
};
config = lib.mkIf cfg.enable {
nixpkgs.overlays = [ dt_ao_overlay ];
};
}