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39 lines
1.0 KiB
Nix
39 lines
1.0 KiB
Nix
{ lib, ... }:
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{
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options = {
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assertions = lib.mkOption {
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type = lib.types.listOf lib.types.unspecified;
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internal = true;
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default = [ ];
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example = [
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{
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assertion = false;
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message = "you can't enable this for that reason";
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}
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];
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description = ''
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This option allows modules to express conditions that must
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hold for the evaluation of the system configuration to
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succeed, along with associated error messages for the user.
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'';
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};
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warnings = lib.mkOption {
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internal = true;
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default = [ ];
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type = lib.types.listOf lib.types.str;
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example = [ "The `foo' service is deprecated and will go away soon!" ];
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description = ''
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This option allows modules to show warnings to users during
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the evaluation of the system configuration.
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'';
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};
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};
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# impl of assertions is in
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# - <nixpkgs/nixos/modules/system/activation/top-level.nix>
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# - <nixpkgs/nixos/modules/system/service/portable/lib.nix>
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}
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