mirror of
https://github.com/NixOS/nixpkgs.git
synced 2024-11-16 14:54:29 +01:00
757c7f3773
The system output usually contains a symlink from /etc to the static configuration for the benefit of the stage-1 script in the initrd. The stage-2 script is usually started in the real root without such a symlink. In a container, there is no stage-1 and the system output is used directly as a real root. If the symlink is present, setup-etc.pl will create a symlink cycle and the system cannot boot. There is no reason for the /etc link to exist in a container because setup-etc.pl will create the necessary files. The container module will now remove the /etc symlink and create an empty directory. The empty /etc is for container managers to populate it with site-specific settings; for example, to set the hostname. This is required to boot NixOS in an LXC container on another host. See also: #9735
61 lines
1.5 KiB
Nix
61 lines
1.5 KiB
Nix
{ config, lib, pkgs, ... }:
|
|
|
|
with lib;
|
|
|
|
let inherit (pkgs) writeScript; in
|
|
|
|
let
|
|
pkgs2storeContents = l : map (x: { object = x; symlink = "none"; }) l;
|
|
|
|
in {
|
|
# Docker image config.
|
|
imports = [
|
|
../installer/cd-dvd/channel.nix
|
|
./minimal.nix
|
|
./clone-config.nix
|
|
];
|
|
|
|
# Create the tarball
|
|
system.build.tarball = pkgs.callPackage ../../lib/make-system-tarball.nix {
|
|
contents = [
|
|
{
|
|
source = "${config.system.build.toplevel}/.";
|
|
target = "./";
|
|
}
|
|
];
|
|
extraArgs = "--owner=0";
|
|
|
|
# Add init script to image
|
|
storeContents = pkgs2storeContents [
|
|
config.system.build.toplevel
|
|
pkgs.stdenv
|
|
];
|
|
|
|
# Some container managers like lxc need these
|
|
extraCommands =
|
|
let script = writeScript "extra-commands.sh" ''
|
|
rm etc
|
|
mkdir -p proc sys dev etc
|
|
'';
|
|
in script;
|
|
};
|
|
|
|
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
|
|
'';
|
|
|
|
# Install new init script
|
|
system.activationScripts.installInitScript = ''
|
|
ln -fs $systemConfig/init /init
|
|
'';
|
|
}
|