nixpkgs/lib/tests/modules/doRename-condition.nix
Johannes Kirschbauer c0f5f271d1
doc: migrate trivial files to doc-comment format (#299986)
* doc: migrate trivial files to doc-comment format

* fix: revert some comments

* Apply suggestions from code review

Thanks @danielSidhion

Co-authored-by: Daniel Sidhion <DanielSidhion@users.noreply.github.com>

* Update lib/types.nix

---------

Co-authored-by: Daniel Sidhion <DanielSidhion@users.noreply.github.com>
Co-authored-by: Silvan Mosberger <github@infinisil.com>
2024-04-04 16:36:07 +02:00

43 lines
1.1 KiB
Nix

/**
Simulate a migration from a single-instance `services.foo` to a multi instance
`services.foos.<name>` module, where `name = ""` serves as the legacy /
compatibility instance.
- No instances must exist, unless one is defined in the multi-instance module,
or if the legacy enable option is set to true.
- The legacy instance options must be renamed to the new instance, if it exists.
The relevant scenarios are tested in separate files:
- ./doRename-condition-enable.nix
- ./doRename-condition-no-enable.nix
*/
{ config, lib, ... }:
let
inherit (lib) mkOption mkEnableOption types doRename;
in
{
options = {
services.foo.enable = mkEnableOption "foo";
services.foos = mkOption {
type = types.attrsOf (types.submodule {
options = {
bar = mkOption { type = types.str; };
};
});
default = { };
};
result = mkOption {};
};
imports = [
(doRename {
from = [ "services" "foo" "bar" ];
to = [ "services" "foos" "" "bar" ];
visible = true;
warn = false;
use = x: x;
withPriority = true;
condition = config.services.foo.enable;
})
];
}