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nixos/displayManager: add XDG_SESSION_ID to systemd user environment

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xss-lock needs XDG_SESSION_ID to respond to loginctl lock-session(s)
(and possibly other session operations such as idle hint management).
This change adds XDG_SESSION_ID to the list of imported environment
variables when starting systemctl.

Inspired by home-manager, add importVariables configuration.

Set session to XDG_SESSION_ID when running xss-lock as a service.

Co-authored-by: misuzu <bakalolka@gmail.com>
This commit is contained in:
Even Brenden 2020-07-24 13:41:24 +02:00
parent 48faedc336
commit 660882d883
2 changed files with 25 additions and 8 deletions
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2
nixos/modules/programs/xss-lock.nix
View file

@ -34,7 +34,7 @@ in
partOf = [ "graphical-session.target" ];
serviceConfig.ExecStart = with lib;
strings.concatStringsSep " " ([
"${pkgs.xss-lock}/bin/xss-lock"
"${pkgs.xss-lock}/bin/xss-lock" "--session \${XDG_SESSION_ID}"
] ++ (map escapeShellArg cfg.extraOptions) ++ [
"--"
cfg.lockerCommand

31
nixos/modules/services/x11/display-managers/default.nix
View file

@ -55,13 +55,6 @@ let
exec &> >(tee ~/.xsession-errors)
''}
# Tell systemd about our $DISPLAY and $XAUTHORITY.
# This is needed by the ssh-agent unit.
#
# Also tell systemd about the dbus session bus address.
# This is required by user units using the session bus.
/run/current-system/systemd/bin/systemctl --user import-environment DISPLAY XAUTHORITY DBUS_SESSION_BUS_ADDRESS
# Load X defaults. This should probably be safe on wayland too.
${xorg.xrdb}/bin/xrdb -merge ${xresourcesXft}
if test -e ~/.Xresources; then
@ -70,6 +63,12 @@ let
${xorg.xrdb}/bin/xrdb -merge ~/.Xdefaults
fi
# Import environment variables into the systemd user environment.
${optionalString (cfg.displayManager.importedVariables != []) (
"/run/current-system/systemd/bin/systemctl --user import-environment "
+ toString (unique cfg.displayManager.importedVariables)
)}
# Speed up application start by 50-150ms according to
# http://kdemonkey.blogspot.nl/2008/04/magic-trick.html
rm -rf "$HOME/.compose-cache"
@ -289,6 +288,14 @@ in
'';
};
importedVariables = mkOption {
type = types.listOf (types.strMatching "[a-zA-Z_][a-zA-Z0-9_]*");
visible = false;
description = ''
Environment variables to import into the systemd user environment.
'';
};
job = {
preStart = mkOption {
@ -360,6 +367,16 @@ in
services.xserver.displayManager.xserverBin = "${xorg.xorgserver.out}/bin/X";
services.xserver.displayManager.importedVariables = [
# This is required by user units using the session bus.
"DBUS_SESSION_BUS_ADDRESS"
# These are needed by the ssh-agent unit.
"DISPLAY"
"XAUTHORITY"
# This is required to specify session within user units (e.g. loginctl lock-session).
"XDG_SESSION_ID"
];
systemd.user.targets.graphical-session = {
unitConfig = {
RefuseManualStart = false;