pyrox.dev
1{ pkgs, lib, ... }:
2
3{
4 config = lib.mkIf (pkgs.kexectools.meta.available) {
5 environment.systemPackages = [ pkgs.kexectools ];
6
7 systemd.services."prepare-kexec" =
8 { description = "Preparation for kexec";
9 wantedBy = [ "kexec.target" ];
10 before = [ "systemd-kexec.service" ];
11 unitConfig.DefaultDependencies = false;
12 serviceConfig.Type = "oneshot";
13 path = [ pkgs.kexectools ];
14 script =
15 ''
16 p=$(readlink -f /nix/var/nix/profiles/system)
17 if ! [ -d $p ]; then exit 1; fi
18 exec kexec --load $p/kernel --initrd=$p/initrd --append="$(cat $p/kernel-params) init=$p/init"
19 '';
20 };
21 };
22}