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https://github.com/NixOS/mobile-nixos.git
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36 lines
1.1 KiB
Nix
36 lines
1.1 KiB
Nix
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{ config, lib, pkgs, baseModules, modules, ... }:
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let
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# Keep modules from this eval around
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modules' = modules;
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inherit (config.nixpkgs.localSystem) system;
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# We can make use the normal NixOS evalConfig here.
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evalConfig = import "${toString pkgs.path}/nixos/lib/eval-config.nix";
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in
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{
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lib = {
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mobile-nixos = {
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# `config.lib.mobile-nixos.composeConfig` is the supported method used to
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# re-evaluate a configuration with additional configuration.
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# Can be used exactly like `evalConfig`, with one additional param.
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# The `config` param directly takes a module (attrset or function).
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composeConfig = { config ? {}, modules ? [], ... }@args:
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let
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filteredArgs = lib.filterAttrs (k: v: k != "config") args;
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in
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evalConfig (
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filteredArgs // {
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# Needed for hermetic eval, otherwise `eval-config.nix` will try
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# to use `builtins.currentSystem`.
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inherit system;
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inherit baseModules;
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# Merge in this eval's modules with the argument's modules, and finally
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# with the given config.
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modules = modules' ++ modules ++ [ config ];
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});
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};
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};
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}
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