Enable linger
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3 changed files with 46 additions and 0 deletions
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@ -4,6 +4,7 @@ let
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in {
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in {
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users.users = {
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users.users = {
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"${me.user}" = {
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"${me.user}" = {
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linger = true;
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description = me.name;
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description = me.name;
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isNormalUser = true;
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isNormalUser = true;
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uid = 1000;
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uid = 1000;
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@ -11,6 +11,7 @@
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./admin.nix
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./admin.nix
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./syncthing.nix
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./syncthing.nix
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./modules/cdarknet
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./modules/cdarknet
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./modules/loginctl-linger.nix
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];
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];
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i18n = {
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i18n = {
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44
system/modules/loginctl-linger.nix
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44
system/modules/loginctl-linger.nix
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@ -0,0 +1,44 @@
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{ config, lib, pkgs, ... }:
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# A temporary hack to `loginctl enable-linger $somebody` (for
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# multiplexer sessions to last), until this one is unresolved:
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# https://github.com/NixOS/nixpkgs/issues/3702
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#
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# Usage: `users.extraUsers.somebody.linger = true` or slt.
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with lib;
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let
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dataDir = "/var/lib/systemd/linger";
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lingeringUsers = map (u: u.name) (attrValues (flip filterAttrs config.users.users (n: u: u.linger)));
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lingeringUsersFile = builtins.toFile "lingering-users"
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(concatStrings (map (s: "${s}\n")
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(sort (a: b: a < b) lingeringUsers))); # this sorting is important for `comm` to work correctly
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updateLingering = pkgs.writeScript "update-lingering" ''
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# Stop when the system is not running, e.g. during nixos-install
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[[ -e /run/booted-system ]] || exit 0
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lingering=$(ls ${dataDir} 2> /dev/null | sort)
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echo "$lingering" | comm -3 -1 ${lingeringUsersFile} - | xargs -r ${pkgs.systemd}/bin/loginctl disable-linger
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echo "$lingering" | comm -3 -2 ${lingeringUsersFile} - | xargs -r ${pkgs.systemd}/bin/loginctl enable-linger
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'';
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in
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{
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options = {
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users.users = mkOption {
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options = [{
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linger = mkEnableOption "lingering for the user";
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}];
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};
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};
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config = {
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system.activationScripts.update-lingering =
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stringAfter [ "users" ] updateLingering;
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};
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}
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