Package: ukui-session-manager
Severity: normal
Tags: trixie sid
User: xdg-desktop-por...@packages.debian.org
Usertags: portals.conf

xdg-desktop-portal 1.17.x introduces a new way to select which portals will
be used for which desktop environments, modelled on mimeapps.list:

- each desktop environment should provide a file like
  /usr/share/xdg-desktop-portal/ukui-portals.conf

- the filename is ${DESKTOP}-portals.conf where ${DESKTOP} is the desktop
  environment's entry in $XDG_CURRENT_DESKTOP (the same as the DesktopNames
  from /usr/share/{x,wayland-}sessions/*.desktop), folded to lower case

- sysadmins and users can override this via files named portals.conf or
  ${DESKTOP}-portals.conf in various locations like /etc/xdg-desktop-portal
  and ~/.config/xdg-desktop-portal

Please see portals.conf(5) or its source code
https://github.com/flatpak/xdg-desktop-portal/blob/main/doc/portals-conf.rst
for full details.

As a backwards-compatibility mechanism, x-d-p will fall back to trying
to guess the most appropriate portals from the portals' UseIn= fields,
but it will log warnings when it does that, and anyway Debian doesn't
currently ship any portal backends that are flagged as suitable for UKUI.
Please add a ukui-portals.conf to tell x-d-p more explicitly what backends
UKUI is meant to be using by default.

For example, if the intention is to use x-d-p-gtk, the way to write that
would be:

[preferred]
default=gtk;

The desktop environment (either ukui-session-manager or some larger
metapackage) should probably also have a Recommends, or at least a
Suggests, on whatever portals would be most appropriate for it.

For an example of a more complex portal configuration, see gnome-session:
https://salsa.debian.org/gnome-team/gnome-session/-/commit/b201c9c40e3adc7bf0b1c3504bef4c8602aac31d

Thanks,
    smcv

-- 
This is part of a mass bug filing:
https://lists.debian.org/debian-devel/2023/08/msg00311.html

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