nixos-generators/formats-broken/kexec.nix
2023-07-22 16:20:50 +02:00

72 lines
1.9 KiB
Nix

{
config,
pkgs,
lib,
modulesPath,
options,
...
}: let
clever-tests = builtins.fetchGit {
url = "https://github.com/cleverca22/nix-tests";
rev = "a9a316ad89bfd791df4953c1a8b4e8ed77995a18"; # master on 2021-06-13
};
inherit (import ../lib.nix {inherit lib options;}) maybe;
in {
imports = [
"${toString modulesPath}/installer/netboot/netboot-minimal.nix"
"${clever-tests}/kexec/autoreboot.nix"
"${clever-tests}/kexec/kexec.nix"
"${clever-tests}/kexec/justdoit.nix"
];
system.build = rec {
kexec_tarball = maybe.mkForce (pkgs.callPackage "${toString modulesPath}/../lib/make-system-tarball.nix" {
storeContents = [
{
object = config.system.build.kexec_script;
symlink = "/kexec_nixos";
}
];
contents = [];
});
kexec_tarball_self_extract_script = pkgs.writeTextFile {
executable = true;
name = "kexec-nixos";
text = ''
#!/bin/sh
set -eu
ARCHIVE=`awk '/^__ARCHIVE_BELOW__/ { print NR + 1; exit 0; }' $0`
tail -n+$ARCHIVE $0 | tar xJ -C /
/kexec_nixos
exit 1
__ARCHIVE_BELOW__
'';
};
kexec_bundle = pkgs.runCommand "kexec_bundle" {} ''
cat \
${kexec_tarball_self_extract_script} \
${config.system.build.kexec_tarball}/tarball/nixos-system-${config.system.build.kexec_tarball.system}.tar.xz \
> $out
chmod +x $out
'';
};
boot.loader.grub.enable = false;
boot.kernelParams = [
"console=ttyS0,115200" # allows certain forms of remote access, if the hardware is setup right
"panic=30"
"boot.panic_on_fail" # reboot the machine upon fatal boot issues
];
systemd.services.sshd.wantedBy = lib.mkForce ["multi-user.target"];
networking.hostName = lib.mkDefault "kexec";
formatAttr = "kexec_tarball";
fileExtension = "*/tarball/*.tar.xz";
}