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44 lines
1 KiB
Nix
44 lines
1 KiB
Nix
{ config, lib, pkgs, ... }:
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with lib;
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let
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inherit (pkgs) stdenv;
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cfg = config.services.activate-system;
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in
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{
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options = {
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services.activate-system.enable = mkOption {
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type = types.bool;
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default = false;
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description = ''
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Whether to activate system at boot time.
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'';
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};
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};
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config = mkIf cfg.enable {
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launchd.daemons.activate-system = {
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script = ''
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# Make this configuration the current configuration.
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# The readlink is there to ensure that when $systemConfig = /system
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# (which is a symlink to the store), /run/current-system is still
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# used as a garbage collection root.
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ln -sfn $(cat ${config.system.profile}/systemConfig) /run/current-system
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# Prevent the current configuration from being garbage-collected.
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ln -sfn /run/current-system /nix/var/nix/gcroots/current-system
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${config.system.activationScripts.nix.text}
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'';
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serviceConfig.RunAtLoad = true;
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serviceConfig.KeepAlive.SuccessfulExit = false;
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};
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};
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}
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