Redshift user service disallowed from using GeoClue2

I can't get Redshift to retrieve geolocation information from GeoClue2. The state right now, after a reboot and without having changed any packages or configuration since the reboot, is that - the GeoClue service is running: $ systemctl status geoclue.service ● geoclue.service - Location Lookup Service Loaded: loaded (/usr/lib/systemd/system/geoclue.service; static; vendor preset: disabled) Active: active (running) since Wed 2018-09-05 18:49:03 NZST; 3s ago Main PID: 8489 (geoclue) Tasks: 4 (limit: 4915) Memory: 2.1M CGroup: /system.slice/geoclue.service └─8489 /usr/lib/geoclue Sep 05 18:49:03 machine systemd[1] : Starting Location Lookup Service... Sep 05 18:49:03 machine systemd[1] : Started Location Lookup Service. - the packages are up to date: $ pacman --sync --info geoclue2 redshift Repository : extra Name : geoclue2 Version : 2.4.12-1 Description : Modular geoinformation service built on the D-Bus messaging system Architecture : x86_64 URL : https://www.freedesktop.org/wiki/Software/GeoClue/ Licenses : LGPL Groups : None Provides : None Depends On : libsoup json-glib libmm-glib avahi libnotify Optional Deps : None Conflicts With : geoclue Replaces : None Download Size : 154.42 KiB Installed Size : 1206.00 KiB Packager : Jan Alexander Steffens (heftig) Build Date : Sun 02 Sep 2018 07:42:59 NZST Validated By : MD5 Sum SHA-256 Sum Signature Repository : community Name : redshift Version : 1.12-2 Description : Adjusts the color temperature of your screen according to your surroundings. Architecture : x86_64 URL : http://jonls.dk/redshift/ Licenses : GPL3 Groups : None Provides : None Depends On : geoclue2 libdrm libxcb libxxf86vm Optional Deps : python-gobject: for redshift-gtk python-xdg: for redshift-gtk gtk3: for redshift-gtk Conflicts With : None Replaces : None Download Size : 130.88 KiB Installed Size : 851.00 KiB Packager : Evangelos Foutras Build Date : Tue 24 Jul 2018 03:19:05 NZST Validated By : MD5 Sum SHA-256 Sum Signature - GeoClue is configured to allow access from Redshift: $ tail --lines=4 /etc/geoclue/geoclue.conf [redshift] allowed=true system=false users= and yet Redshift is unable to start: $ redshift Trying location provider `geoclue2'... Using provider `geoclue2'. Using method `randr'. Waiting for initial location to become available... Unable to start GeoClue client: GDBus.Error:org.freedesktop.DBus.Error.NoReply: Message recipient disconnected from message bus without replying. Unable to get location from provider. The user service exhibits a *different* behaviour: Trying location provider `geoclue2'... Using provider `geoclue2'. Using method `randr'. Waiting for initial location to become available... Unable to start GeoClue client: GDBus.Error:org.freedesktop.DBus.Error.AccessDenied: 'redshift' disallowed, no agent for UID 1000. Access to the current location was denied by GeoClue! Make sure that location services are enabled and that Redshift is permitted to use location services. See https://github.com/jonls/redshift#faq for more information. Unable to get location from provider. There seems to be a hack available to work around a similar problem - the error message above is different from that page when starting the program manually - but I'm interested in whether a more permanent fix is available or being worked on.