mirror of
https://github.com/NixOS/mobile-nixos.git
synced 2024-10-26 13:03:04 +03:00
108 lines
3.2 KiB
Nix
108 lines
3.2 KiB
Nix
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{ mobile-nixos ? builtins.fetchGit ./.
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# By default, builds all devices.
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, devices ? (import ./all-devices.nix)
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# By default, assume we eval only for currentSystem
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, systems ? [ builtins.currentSystem ]
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# nixpkgs is also an input, used as `<nixpkgs>` in the system configuration.
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}:
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let
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# We require some `lib` stuff in here.
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# Pick a lib from the ambient <nixpkgs>.
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inherit (import <nixpkgs> {}) lib;
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# Given a device compatible with `default.nix`, eval.
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evalFor = device: (import ./. { inherit device; });
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# Systems we should eval for, per host system.
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# Non-native will be assumed cross.
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shouldEvalOn = {
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x86_64-linux = [
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"armv7l-linux"
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"aarch64-linux"
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"x86_64-linux"
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];
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aarch64-linux = [
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"aarch64-linux"
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];
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armv7l-linux = [
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"armv7l-linux"
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];
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};
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# Shortcuts from a simple system name to the structure required for
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# localSystem and crossSystem
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knownSystems = {
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x86_64-linux = lib.systems.examples.gnu64;
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aarch64-linux = lib.systems.examples.aarch64-multiplatform;
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armv7l-linux = lib.systems.examples.armv7l-hf-multiplatform;
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};
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# Given an evaluated "device", filters `pkgs` down to only our packages
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# unique to the overaly.
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# Also removes some non-packages from the overlay.
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overlayForEval =
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let
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# Trick the overlay in giving us its attributes.
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# Using the values is likely to fail. Thank lazyness!
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overlay = import ./overlay/overlay.nix {} {};
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in
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eval:
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(lib.genAttrs (builtins.attrNames overlay) (name: eval.pkgs.${name})) //
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{
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# We only "monkey patch" over top of the main nixos one.
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xorg = {
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xf86videofbdev = eval.pkgs.xorg.xf86videofbdev;
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};
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# lib-like attributes...
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# How should we handle these?
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imageBuilder = null;
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kernel-builder = null;
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kernel-builder-gcc49 = null;
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kernel-builder-gcc6 = null;
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# Also lib-like, but a "global" like attribute :/
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defaultKernelPatches = null;
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}
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;
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# Given a system builds run on, this will return a set of further systems
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# this builds in, either native or cross.
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# The values are `overlayForEval` applied for the pair local/cross systems.
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evalForSystem = system: builtins.listToAttrs
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(builtins.map (
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buildingForSystem:
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let
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# "device" name for the eval *and* key used for the set.
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name = if system == buildingForSystem then buildingForSystem else "${buildingForSystem}-cross";
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# "device" eval for our dummy device.
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eval = evalFor {
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special = true;
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inherit name;
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config = {
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mobile.hardware.soc = {
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x86_64-linux = "generic-x86_64";
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aarch64-linux = "generic-aarch64";
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armv7l-linux = "generic-armv7l";
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}.${buildingForSystem};
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nixpkgs.localSystem = knownSystems.${system};
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};
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};
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overlay = overlayForEval eval;
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in {
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inherit name;
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value = overlay;
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}) shouldEvalOn.${system}
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)
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;
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in
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{
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overlay =
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lib.genAttrs systems (system:
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(evalForSystem system)
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)
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;
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device = lib.genAttrs devices (device: (evalFor device).build.default);
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}
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