52 lines
1.1 KiB
Nix
52 lines
1.1 KiB
Nix
{ config, lib, pkgs, ... }:
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with lib;
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let
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cfg = config.system.nixos;
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in
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{
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options.system = {
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nixos.label = mkOption {
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type = types.str;
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description = ''
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NixOS version name to be used in the names of generated
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outputs and boot labels.
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If you ever wanted to influence the labels in your GRUB menu,
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this is the option for you.
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'';
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};
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nixos.tags = mkOption {
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type = types.listOf types.str;
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default = [];
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example = [ "with-xen" ];
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description = ''
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Strings to prefix to the default
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<option>system.nixos.label</option>.
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Useful for not loosing track of configurations built with
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different options, e.g.:
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<screen>
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{
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system.nixos.tags = [ "with-xen" ];
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virtualisation.xen.enable = true;
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}
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</screen>
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'';
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};
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};
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config = {
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# This is set here rather than up there so that changing it would
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# not rebuild the manual
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system.nixos.label = mkDefault (concatStringsSep "-" (sort (x: y: x < y) cfg.tags) + "-" + cfg.version);
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};
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}
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