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nix-darwin/modules/services/activate-system/default.nix
Emily 731910af01 {activation-scripts,activate-system}: check gcroots before linking
When `nix.enable` is off, we don’t necessarily have an active
Nix installation, so there won’t necessarily be an active
`/nix/var/nix/gcroots` directory to link things into. NixOS just skips
this unconditionally when `nix.enable` is off, but that doesn’t
work well with a context in which we usually expect `nix.enable`
to be coupled with an unmanaged system installation of Nix.
2025-02-11 20:10:55 +00:00

35 lines
1.3 KiB
Nix

{ config, lib, pkgs, ... }:
{
imports = [
(lib.mkRemovedOptionModule [ "services" "activate-system" "enable" ] "The `activate-system` service is now always enabled as it is necessary for a working `nix-darwin` setup.")
];
config = {
launchd.daemons.activate-system = {
script = ''
set -e
set -o pipefail
export PATH="${pkgs.gnugrep}/bin:${pkgs.coreutils}/bin:@out@/sw/bin:/usr/bin:/bin:/usr/sbin:/sbin"
systemConfig=$(cat ${config.system.profile}/systemConfig)
# 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 $(cat ${config.system.profile}/systemConfig) /run/current-system
# Prevent the current configuration from being garbage-collected.
if [[ -d /nix/var/nix/gcroots ]]; then
ln -sfn /run/current-system /nix/var/nix/gcroots/current-system
fi
${config.system.activationScripts.etcChecks.text}
${config.system.activationScripts.etc.text}
${config.system.activationScripts.keyboard.text}
'';
serviceConfig.RunAtLoad = true;
};
};
}