The error in `wwan_manager_password_sent_cb` is `g_autoptr` so
we need to steal it when propagating it upwards.

We also need to copy it when add it to an object that outlives the
function via `g_object_set_data`.

Fixes: 00a872ca ("Re-write wwan plugin")
Signed-off-by: Guido Günther <agx@sigxcpu.org>

This will be needed after switching from using Xvfb to headless mutter +
Xwayland.

The linked pull request landed 6 years ago, so we can probably use that
feature now.

This allows to shorten some future generated API.

It makes it easier to search and make sense about if they have some kind
of name instead of just a number.

This removes the dependency on Xvfb, and decreases the risk of zombie
X11 frame processes due to SIGKILL being used for terminating mutter.

For xsettings tests, which needs an X11 server, we rely on Xwayland
started by mutter. In order for gsd-xsettings to be able to connect, the
X11 display name and Xauthority path needs to be extracted, which is
done with the help of a named pipe and a simple shell script launched by
mutter.

This will make it easier to change the image when some work have new
dependencies.

Instead of getting the UI scaling factor from the display configuration
API, get it from a new X11 properties API exposed by mutter.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-settings-daemon/-/merge_requests/353>

A useful shell script copied from the mutter CI directory.

This makes it include the necessary dependencies for API's replacing
libgnome-rr usage.

The intention is to replace libgnome-rr uses with it.

Instead use org.gnome.Mutter.DisplayConfig directly. The manual
processing of monitors and their state has been replaced with an
explicit 'HasExternalMonitor' property on
`org.gnome.Mutter.DisplayConfig`, and detecting and changing backlight
and the monitors have been replaced with an explicit `Backlight`
property and `SetBacklight` method on `org.gnome.Mutter.DisplayConfig`

The PropertiesChanged signal was subscribed to on the wrong interface,
preventing updates of the X11 window scale when changed on the Mutter
side.

Fixes: 6ec8c383 ("xsettings: Get UI scaling factor from dedicated D-Bus API")

(cherry picked from commit 56cf0be48223697e664051f710769e830a09b755)

The `monitor` is expected to be a GVariant, so we need to include the
`@` here.

Fixes: 7f8e33c7 ("power: Stop using libgnome-rr")
Closes: https://gitlab.gnome.org/GNOME/gnome-settings-daemon/-/issues/817

Notify callbacks always include a ParamSpec, which was accidentally
getting used as `backlight` here, causing an invalid free when
`update_mutter_backlight()` was trying to free the old
`backlight->backlight_connector`.

Fixes: 7f8e33c7 ("power: Stop using libgnome-rr")

Update to upstream version '47~rc'
with Debian dir 9e7e38e882f7ecfe3967476b4f56cd9847e5c373

We now need the DisplayConfig and X11 D-Bus interfaces from mutter 47.

mutter needs this for Xwayland. In a buildd chroot,
/etc/init.d/x11-common won't necessarily have been run (because
policy-rc.d suppresses it), so we might have to create this for
ourselves.

It seems that the Lid test regresses if we drop this (either that, or
it's a flaky test that doesn't always pass).

tagging package gnome-settings-daemon version debian/47_rc-1