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29f9fb52b3
This makes rollback more reliable by using the same version of tools that where used previously. For example nix is used during the activation checks.
117 lines
3.3 KiB
Nix
117 lines
3.3 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.system;
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script = import ../lib/write-text.nix {
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inherit lib;
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mkTextDerivation = name: text: pkgs.writeScript "activate-${name}" text;
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};
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in
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{
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options = {
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system.activationScripts = mkOption {
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internal = true;
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type = types.attrsOf (types.submodule script);
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default = {};
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description = ''
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A set of shell script fragments that are executed when a NixOS
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system configuration is activated. Examples are updating
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/etc, creating accounts, and so on. Since these are executed
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every time you boot the system or run
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<command>nixos-rebuild</command>, it's important that they are
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idempotent and fast.
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'';
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};
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};
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config = {
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system.activationScripts.script.text = ''
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#! ${stdenv.shell}
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set -e
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set -o pipefail
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export PATH=${pkgs.coreutils}/bin:@out@/sw/bin:${config.environment.systemPath}
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systemConfig=@out@
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_status=0
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trap "_status=1" ERR
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# Ensure a consistent umask.
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umask 0022
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${cfg.activationScripts.preActivation.text}
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${cfg.activationScripts.extraActivation.text}
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${cfg.activationScripts.groups.text}
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${cfg.activationScripts.users.text}
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${cfg.activationScripts.nix.text}
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${cfg.activationScripts.applications.text}
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${cfg.activationScripts.etc.text}
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${cfg.activationScripts.launchd.text}
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${cfg.activationScripts.nix-daemon.text}
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${cfg.activationScripts.time.text}
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${cfg.activationScripts.networking.text}
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${cfg.activationScripts.keyboard.text}
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${cfg.activationScripts.postActivation.text}
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# Make this configuration the current configuration.
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# The readlink is there to ensure that when $systemConfig = /system
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# (which is a symlink to the store), /run/current-system is still
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# used as a garbage collection root.
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ln -sfn "$(readlink -f "$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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exit $_status
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'';
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system.activationScripts.userScript.text = ''
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#! ${stdenv.shell}
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set -e
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set -o pipefail
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export PATH=${pkgs.coreutils}/bin:@out@/sw/bin:${config.environment.systemPath}
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systemConfig=@out@
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_status=0
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trap "_status=1" ERR
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# Ensure a consistent umask.
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umask 0022
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${cfg.activationScripts.preUserActivation.text}
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${cfg.activationScripts.checks.text}
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${cfg.activationScripts.extraUserActivation.text}
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${cfg.activationScripts.defaults.text}
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${cfg.activationScripts.userLaunchd.text}
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${cfg.activationScripts.postUserActivation.text}
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exit $_status
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'';
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# Extra activation scripts, that can be customized by users
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# don't use this unless you know what you are doing.
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system.activationScripts.extraActivation.text = mkDefault "";
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system.activationScripts.preActivation.text = mkDefault "";
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system.activationScripts.postActivation.text = mkDefault "";
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system.activationScripts.extraUserActivation.text = mkDefault "";
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system.activationScripts.preUserActivation.text = mkDefault "";
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system.activationScripts.postUserActivation.text = mkDefault "";
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};
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}
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