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{ lib, config, pkgs, ... }:
{
meta = {
maintainers = lib.teams.lxc.members;
};
imports = [
./lxc-instance-common.nix
(lib.mkRemovedOptionModule [ "virtualisation" "lxc" "nestedContainer" ] "")
(lib.mkRemovedOptionModule [ "virtualisation" "lxc" "privilegedContainer" ] "")
];
options = { };
config = let
initScript = if config.boot.initrd.systemd.enable then "prepare-root" else "init";
in {
boot.isContainer = true;
boot.postBootCommands =
''
# After booting, register the contents of the Nix store in the Nix
# database.
if [ -f /nix-path-registration ]; then
${config.nix.package.out}/bin/nix-store --load-db < /nix-path-registration &&
rm /nix-path-registration
fi
# nixos-rebuild also requires a "system" profile
${config.nix.package.out}/bin/nix-env -p /nix/var/nix/profiles/system --set /run/current-system
'';
system.build.tarball = pkgs.callPackage ../../lib/make-system-tarball.nix {
extraArgs = "--owner=0";
storeContents = [
{
object = config.system.build.toplevel;
symlink = "none";
}
];
contents = [
{
source = config.system.build.toplevel + "/${initScript}";
target = "/sbin/init";
}
# Technically this is not required for lxc, but having also make this configuration work with systemd-nspawn.
# Nixos will setup the same symlink after start.
{
source = config.system.build.toplevel + "/etc/os-release";
target = "/etc/os-release";
}
];
extraCommands = "mkdir -p proc sys dev";
};
system.build.squashfs = pkgs.callPackage ../../lib/make-squashfs.nix {
fileName = "nixos-lxc-image-${pkgs.stdenv.hostPlatform.system}";
noStrip = true; # keep directory structure
comp = "zstd -Xcompression-level 6";
storeContents = [config.system.build.toplevel];
pseudoFiles = [
"/sbin d 0755 0 0"
"/sbin/init s 0555 0 0 ${config.system.build.toplevel}/${initScript}"
"/dev d 0755 0 0"
"/proc d 0555 0 0"
"/sys d 0555 0 0"
];
};
system.build.installBootLoader = pkgs.writeScript "install-lxd-sbin-init.sh" ''
#!${pkgs.runtimeShell}
${pkgs.coreutils}/bin/ln -fs "$1/${initScript}" /sbin/init
'';
# networkd depends on this, but systemd module disables this for containers
systemd.additionalUpstreamSystemUnits = ["systemd-udev-trigger.service"];
systemd.packages = [ pkgs.distrobuilder.generator ];
system.activationScripts.installInitScript = lib.mkForce ''
ln -fs $systemConfig/${initScript} /sbin/init
'';
};
}
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