System wide profiles in /var/lib/colord/icc not detected when running as systemd service

[amaxine]

When running colord with the default systemd unit file, the service doesn't seem to detect any ICC profiles I have installed system wide.

Jan 06 23:30:09 quirm systemd[1]: Starting Manage, Install and Generate Color Profiles...
Jan 06 23:30:09 quirm colord[152928]: 23:30:09        Verbose debugging enabled (on console 0)
Jan 06 23:30:09 quirm colord[152928]: 23:30:09        CdMappingDb: trying to open database '/var/lib/colord/mapping.db'
Jan 06 23:30:09 quirm colord[152928]: 23:30:09        CdDeviceDb: trying to open database '/var/lib/colord/storage.db'
Jan 06 23:30:09 quirm colord[152928]: 23:30:09        CdProfileDb: trying to open database '/var/lib/colord/storage.db'
Jan 06 23:30:09 quirm colord[152928]: 23:30:09        display card0-eDP-1 has ID 'xrandr-BOE' from MD5 05844d77df56db3cf0d5d4ff8c8a41ac
Jan 06 23:30:09 quirm colord[152928]: 23:30:09        searching for plugins in /nix/store/6gnyy5s8ps6l6pgjx0vd0q39sc61m61l-colord-1.4.6/lib/colord-plugins
Jan 06 23:30:09 quirm colord[152928]: 23:30:09        run cd_plugin_initialize on /nix/store/6gnyy5s8ps6l6pgjx0vd0q39sc61m61l-colord-1.4.6/lib/colord-plugins/libcolord_sensor_scanner.so
Jan 06 23:30:09 quirm colord[152928]: 23:30:09        finished cd_plugin_initialize
Jan 06 23:30:09 quirm colord[152928]: 23:30:09        run cd_plugin_initialize on /nix/store/6gnyy5s8ps6l6pgjx0vd0q39sc61m61l-colord-1.4.6/lib/colord-plugins/libcolord_sensor_sane.so
Jan 06 23:30:09 quirm colord[152928]: 23:30:09        finished cd_plugin_initialize
Jan 06 23:30:09 quirm colord[152928]: 23:30:09        run cd_plugin_initialize on /nix/store/6gnyy5s8ps6l6pgjx0vd0q39sc61m61l-colord-1.4.6/lib/colord-plugins/libcolord_sensor_camera.so
Jan 06 23:30:09 quirm colord[152928]: 23:30:09        finished cd_plugin_initialize
Jan 06 23:30:09 quirm colord[152928]: 23:30:09        System vendor: 'Framework', System model: 'Laptop 13 (AMD Ryzen 7040Series)'
Jan 06 23:30:09 quirm colord[152928]: 23:30:09        CdMain: acquired name: org.freedesktop.ColorManager
Jan 06 23:30:09 quirm systemd[1]: Started Manage, Install and Generate Color Profiles.
Jan 06 23:30:09 quirm colord[152928]: 23:30:09        CdDeviceDb: get devices
Jan 06 23:30:09 quirm colord[152928]: 23:30:09        run cd_plugin_coldplug on /nix/store/6gnyy5s8ps6l6pgjx0vd0q39sc61m61l-colord-1.4.6/lib/colord-plugins/libcolord_sensor_scanner.so
Jan 06 23:30:09 quirm colord[152928]: 23:30:09        finished cd_plugin_coldplug
Jan 06 23:30:09 quirm colord[152928]: 23:30:09        run cd_plugin_coldplug on /nix/store/6gnyy5s8ps6l6pgjx0vd0q39sc61m61l-colord-1.4.6/lib/colord-plugins/libcolord_sensor_sane.so
Jan 06 23:30:09 quirm colord[152928]: 23:30:09        finished cd_plugin_coldplug
Jan 06 23:30:09 quirm colord[152928]: 23:30:09        run cd_plugin_coldplug on /nix/store/6gnyy5s8ps6l6pgjx0vd0q39sc61m61l-colord-1.4.6/lib/colord-plugins/libcolord_sensor_camera.so
Jan 06 23:30:09 quirm colord[152928]: 23:30:09        finished cd_plugin_coldplug
Jan 06 23:30:09 quirm colord[152928]: 23:30:09        CdMain: :1.239:GetDevicesByKind(scanner)
Jan 06 23:30:20 quirm colord[152928]: 23:30:20        CdMain: :1.242:GetProfiles()

However, running colord directly, the service successfully detects installed profiles

 sudo -u colord /nix/store/6gnyy5s8ps6l6pgjx0vd0q39sc61m61l-colord-1.4.6/libexec/colord --verbose
Place your right index finger on the fingerprint reader
23:32:46	Verbose debugging enabled (on console 1)
23:32:46	CdMappingDb: trying to open database '/var/lib/colord/mapping.db'
23:32:46	CdDeviceDb: trying to open database '/var/lib/colord/storage.db'
23:32:46	CdProfileDb: trying to open database '/var/lib/colord/storage.db'
23:32:46	display card0-eDP-1 has ID 'xrandr-BOE' from MD5 05844d77df56db3cf0d5d4ff8c8a41ac
23:32:46	searching for plugins in /nix/store/6gnyy5s8ps6l6pgjx0vd0q39sc61m61l-colord-1.4.6/lib/colord-plugins
23:32:46	run cd_plugin_initialize on /nix/store/6gnyy5s8ps6l6pgjx0vd0q39sc61m61l-colord-1.4.6/lib/colord-plugins/libcolord_sensor_scanner.so
23:32:46	finished cd_plugin_initialize
23:32:46	run cd_plugin_initialize on /nix/store/6gnyy5s8ps6l6pgjx0vd0q39sc61m61l-colord-1.4.6/lib/colord-plugins/libcolord_sensor_sane.so
23:32:46	finished cd_plugin_initialize
23:32:46	run cd_plugin_initialize on /nix/store/6gnyy5s8ps6l6pgjx0vd0q39sc61m61l-colord-1.4.6/lib/colord-plugins/libcolord_sensor_camera.so
23:32:46	finished cd_plugin_initialize
23:32:46	System vendor: 'Framework', System model: 'Laptop 13 (AMD Ryzen 7040Series)'
23:32:46	CdMain: acquired name: org.freedesktop.ColorManager
23:32:46	CdMain: Adding profile /org/freedesktop/ColorManager/profiles/icc_eca2e6d155d550a5e78c97a34ac3fcae
23:32:46	CdMain: Emitting ProfileAdded(/org/freedesktop/ColorManager/profiles/icc_eca2e6d155d550a5e78c97a34ac3fcae)
23:32:46	CdMain: Adding profile /org/freedesktop/ColorManager/profiles/icc_bb49415a4fd65b3a07a74f6e1185415f
23:32:46	CdMain: Emitting ProfileAdded(/org/freedesktop/ColorManager/profiles/icc_bb49415a4fd65b3a07a74f6e1185415f)
23:32:46	CdDeviceDb: get devices
23:32:46	run cd_plugin_coldplug on /nix/store/6gnyy5s8ps6l6pgjx0vd0q39sc61m61l-colord-1.4.6/lib/colord-plugins/libcolord_sensor_scanner.so
23:32:46	finished cd_plugin_coldplug
23:32:46	run cd_plugin_coldplug on /nix/store/6gnyy5s8ps6l6pgjx0vd0q39sc61m61l-colord-1.4.6/lib/colord-plugins/libcolord_sensor_sane.so
23:32:46	finished cd_plugin_coldplug
23:32:46	run cd_plugin_coldplug on /nix/store/6gnyy5s8ps6l6pgjx0vd0q39sc61m61l-colord-1.4.6/lib/colord-plugins/libcolord_sensor_camera.so
23:32:46	finished cd_plugin_coldplug
23:32:46	CdMain: :1.252:GetDevicesByKind(scanner)
23:32:50	CdMain: :1.254:GetProfiles()
23:32:50	CdProfileDb: get property Title for icc-eca2e6d155d550a5e78c97a34ac3fcae
23:32:50	CdProfileDb: get property Title for icc-bb49415a4fd65b3a07a74f6e1185415f

The profiles are owned by the same user as the service is running, though this doesn't appear to make a difference as running as the profiles are detected just fine if they're owned by another user including root as long as they are readable.

[hughsie]

Permissions problem? We don't do any testing on nix, so you might have to debug a bit I'm afraid.