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{ lib, ... }:
{
_class = null; # not specific to NixOS
options = {
assertions = lib.mkOption {
type = lib.types.listOf lib.types.unspecified;
internal = true;
default = [ ];
example = [
{
assertion = false;
message = "you can't enable this for that reason";
}
];
description = ''
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 = lib.types.listOf lib.types.str;
example = [ "The `foo' service is deprecated and will go away soon!" ];
description = ''
This option allows modules to show warnings to users during
the evaluation of the system configuration.
'';
};
};
# impl of assertions is in
# - <nixpkgs/nixos/modules/system/activation/top-level.nix>
# - <nixpkgs/lib/services/lib.nix>
}
|
