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|
{ config, lib, pkgs, ... }:
with lib;
let
inherit (pkgs) stdenv;
cfg = config.system;
script = import ../lib/write-text.nix {
inherit lib;
mkTextDerivation = name: text: pkgs.writeScript "activate-${name}" text;
};
in
{
options = {
system.activationScripts = mkOption {
internal = true;
type = types.attrsOf (types.submodule script);
default = {};
description = ''
A set of shell script fragments that are executed when a NixOS
system configuration is activated. Examples are updating
/etc, creating accounts, and so on. Since these are executed
every time you boot the system or run
<command>nixos-rebuild</command>, it's important that they are
idempotent and fast.
'';
};
};
config = {
system.activationScripts.script.text = ''
#! ${stdenv.shell}
set -e
set -o pipefail
export PATH=${pkgs.coreutils}/bin:${config.environment.systemPath}
systemConfig=@out@
_status=0
trap "_status=1" ERR
# Ensure a consistent umask.
umask 0022
${cfg.activationScripts.extraActivation.text}
${cfg.activationScripts.nix-daemon.text}
${cfg.activationScripts.nix.text}
${cfg.activationScripts.etc.text}
${cfg.activationScripts.launchd.text}
${cfg.activationScripts.time.text}
# Make this configuration the current configuration.
# The readlink is there to ensure that when $systemConfig = /system
# (which is a symlink to the store), /run/current-system is still
# used as a garbage collection root.
ln -sfn "$(readlink -f "$systemConfig")" /run/current-system
# Prevent the current configuration from being garbage-collected.
ln -sfn /run/current-system /nix/var/nix/gcroots/current-system
exit $_status
'';
system.activationScripts.userScript.text = ''
#! ${stdenv.shell}
set -e
set -o pipefail
export PATH=${pkgs.coreutils}/bin:${config.environment.systemPath}
systemConfig=@out@
_status=0
trap "_status=1" ERR
# Ensure a consistent umask.
umask 0022
${cfg.activationScripts.extraUserActivation.text}
${cfg.activationScripts.defaults.text}
${cfg.activationScripts.userLaunchd.text}
exit $_status
'';
# Extra activation scripts, that can be customized by users
# don't use this unless you know what you are doing.
system.activationScripts.extraActivation.text = mkDefault "";
system.activationScripts.extraUserActivation.text = mkDefault "";
};
}
|
