WIP introduce nixos module system for configuration

This commit is contained in:
Daniel Barlow 2022-09-25 11:10:22 +01:00
parent 0f999f9ae4
commit 887a4ff966
6 changed files with 59 additions and 0 deletions

8
merge-modules.nix Normal file
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module : initial : pkgs :
let evalModules = (import <nixpkgs/lib>).evalModules;
in evalModules {
modules = [
{ _module.args = { inherit pkgs; }; }
module
];
}

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{ config, pkgs, ... } :
{
imports = [ ./defs.nix ./module.nix ];
config = {
services.a.enable = true;
services.b.enable = true;
systemPackages = [ pkgs.hello ] ;
};
}

16
tests/module/defs.nix Normal file
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{ lib, ...}:
let inherit (lib) mkEnableOption mkOption types;
in {
options = {
services.a = {
enable = mkEnableOption "hello service";
};
services.b = {
enable = mkEnableOption "other service";
};
services.z = mkOption { };
systemPackages = mkOption {
type = types.listOf types.package;
};
};
}

6
tests/module/module.nix Normal file
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{ config, pkgs, ... } :
{
services.z = pkgs.figlet;
systemPackages = [ pkgs.units ] ;
}

2
tests/module/run.sh Executable file
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set -e
NIXPKGS_ALLOW_UNSUPPORTED_SYSTEM=1 nix-build --arg device "import <liminix/devices/qemu.nix>" test.nix

17
tests/module/test.nix Normal file
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{ device }:
let
overlay = import <liminix/overlay.nix> ;
nixpkgs = import <nixpkgs> ( device.system // {overlays = [overlay]; });
inherit (nixpkgs) lib pkgs;
inherit (lib.asserts) assertMsg;
config =
(import <liminix/merge-modules.nix>) ./configuration.nix {} pkgs;
res1 = assertMsg
# check we have packages from both modules
(config.config.systemPackages == ( with pkgs; [ units hello ])) "failed";
res2 = let s = config.config.services;
in assertMsg (s.a.enable && s.b.enable && (s.z != null) ) "failed";
in pkgs.writeText "foo" ''
${if res1 then "OK" else "not OK"}
${if res2 then "OK" else "not OK"}
''