Files
infra/modules/nixos/rpi-cross-overlay.nix
Hermes 5ee644e9dd feat(uconsole): add rpi-cross-overlay module + Lix
- rpi-cross-overlay.nix: override pkgs.rpi with cross-compilation
  when buildPlatform != hostPlatform (0 QEMU)
- Lix nix daemon for uConsole (aarch64-linux)
- Remove broken inline overlay from flake.nix
2026-06-12 16:36:49 -04:00

41 lines
1.3 KiB
Nix

# rpi-cross-overlay.nix
#
# Override pkgs.rpi to cross-compile when buildPlatform != hostPlatform.
#
# By default, nixos-raspberrypi's nixpkgs-rpi module creates pkgs.rpi via
# mkRpiPkgs which imports nixpkgs with system="aarch64-linux" — a NATIVE
# aarch64 build that requires QEMU on x86_64 builders.
#
# This module detects cross-compilation (buildPlatform != hostPlatform) and
# re-imports pkgs.rpi using localSystem (builder) + crossSystem (target) so
# that kernel, firmware, and rpi-optimized packages are genuinely cross-compiled
# with zero QEMU emulation.
#
# Once nixos-raspberrypi upstream supports buildPlatform natively in mkRpiPkgs,
# this module can be removed.
{ config, lib, pkgs, nixos-raspberrypi, ... }:
let
inherit (config.nixpkgs) buildPlatform hostPlatform;
isCross = buildPlatform.system != hostPlatform.system;
in
lib.mkIf isCross {
nixpkgs.overlays = [
(final: prev: {
rpi = import pkgs.path {
localSystem = { system = buildPlatform.system; };
crossSystem = { system = hostPlatform.system; };
overlays = with nixos-raspberrypi.overlays; [
bootloader
vendor-kernel
vendor-firmware
kernel-and-firmware
vendor-pkgs
pkgs
];
};
})
];
}