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/*
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;
})
];
}
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