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nixos/systemd: Make machinectl work with NixOS

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Images generated with nixos-install will be supported by machinectl
problem is that systemd-nspawn's private usersns feature clashes
with DynamicUser and RuntimeDirectory features, which causes NixOS
images to not boot. There is an upstream issue for this
https://github.com/systemd/systemd/issues/13622
This commit is contained in:
Arian van Putten 2019-09-25 18:27:19 +02:00
parent d4212d66a8
commit 7058b0ad12
1 changed files with 16 additions and 6 deletions
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22
nixos/modules/system/boot/systemd-nspawn.nix
View file

@ -113,11 +113,21 @@ in {
config =
let
units = mapAttrs' (n: v: let nspawnFile = "${n}.nspawn"; in nameValuePair nspawnFile (instanceToUnit nspawnFile v)) cfg;
in mkIf (cfg != {}) {
environment.etc."systemd/nspawn".source = generateUnits "nspawn" units [] [];
systemd.targets.multi-user.wants = [ "machines.target" ];
};
in
mkMerge [
(mkIf (cfg != {}) {
environment.etc."systemd/nspawn".source = mkIf (cfg != {}) (generateUnits "nspawn" units [] []);
})
{
systemd.targets.multi-user.wants = [ "machines.target" ];
# Workaround for https://github.com/NixOS/nixpkgs/pull/67232#issuecomment-531315437 and https://github.com/systemd/systemd/issues/13622
# Once systemd fixes this upstream, we can re-enable -U
systemd.services."systemd-nspawn@".serviceConfig.ExecStart = [
"" # deliberately empty. signals systemd to override the ExecStart
# Only difference between upstream is that we do not pass the -U flag
"${pkgs.systemd}/bin/systemd-nspawn --quiet --keep-unit --boot --link-journal=try-guest --network-veth --settings=override --machine=%i"
];
}
];
}