system-manager/nix/modules/default.nix
2023-05-16 17:27:28 +02:00

136 lines
3.6 KiB
Nix

{ lib
, config
, ...
}:
{
imports = [
./etc.nix
./systemd.nix
./upstream/nixpkgs
];
options =
let
inherit (lib) types;
in
{
nixpkgs = {
# TODO: switch to lib.systems.parsedPlatform
hostPlatform = lib.mkOption {
type = types.str;
example = "x86_64-linux";
default = throw "the option nixpkgs.hostPlatform needs to be set.";
};
};
assertions = lib.mkOption {
type = types.listOf types.unspecified;
internal = true;
default = [ ];
example = [{ assertion = false; message = "you can't enable this for that reason"; }];
description = lib.mdDoc ''
This option allows modules to express conditions that must
hold for the evaluation of the system configuration to
succeed, along with associated error messages for the user.
'';
};
warnings = lib.mkOption {
internal = true;
default = [ ];
type = types.listOf types.str;
example = [ "The `foo' service is deprecated and will go away soon!" ];
description = lib.mdDoc ''
This option allows modules to show warnings to users during
the evaluation of the system configuration.
'';
};
# Statically assigned UIDs and GIDs.
# Ideally we use DynamicUser as much as possible to avoid the need for these.
ids = {
uids = lib.mkOption {
internal = true;
description = lib.mdDoc ''
The user IDs used by system-manager.
'';
type = types.attrsOf types.int;
};
gids = lib.mkOption {
internal = true;
description = lib.mdDoc ''
The group IDs used by system-manager.
'';
type = types.attrsOf types.int;
};
};
# No-op option for now.
# TODO: should we include the settings in /etc/logrotate.d ?
services.logrotate = lib.mkOption {
internal = true;
default = { };
type = types.freeform;
};
# No-op option for now.
users = lib.mkOption {
internal = true;
default = { };
type = types.freeform;
};
networking = {
enableIPv6 = lib.mkEnableOption "IPv6" // {
default = true;
};
};
system-manager = {
allowAnyDistro = lib.mkEnableOption "the usage of system-manager on untested distributions";
preActivationAssertions = lib.mkOption {
type = with lib.types; attrsOf (submodule ({ name, ... }: {
options = {
enable = lib.mkEnableOption "the assertion";
name = lib.mkOption {
type = types.str;
default = name;
};
script = lib.mkOption {
type = types.str;
};
};
}));
default = { };
};
};
};
config = {
system-manager.preActivationAssertions = {
osVersion =
let
supportedIds = [ "nixos" "ubuntu" ];
in
{
enable = !config.system-manager.allowAnyDistro;
script = ''
source /etc/os-release
${lib.concatStringsSep "\n" (lib.flip map supportedIds (supportedId: ''
if [ $ID = "${supportedId}" ]; then
exit 0
fi
''))}
echo "This OS is not currently supported."
echo "Supported OSs are: ${lib.concatStringsSep ", " supportedIds}"
exit 1
'';
};
};
};
}