[Pkg-owncloud-maintainers] Bug#969576: nextcloud-desktop: Main window not visible/constructable

[Paul van Tilburg]

Package: nextcloud-desktop
Version: 3.0.1-1
Severity: important

Dear Maintainer,


The upgrade to 3.0 of the Nextcloud client led to the main window not
being visible anymore. It seems that the QT QML modules are missing to
make it work.  Consider the warnings in the logs:

```
2020-09-05 11:48:57:445 [ warning default ]:	qrc:/qml/src/gui/tray/Window.qml: module "QtQuick" is not installed
2020-09-05 11:48:57:445 [ warning default ]:	qrc:/qml/src/gui/tray/Window.qml:7:1: module "QtGraphicalEffects" is not installed
2020-09-05 11:48:57:445 [ warning default ]:	qrc:/qml/src/gui/tray/Window.qml:6:1: module "QtQuick.Layouts" is not installed
2020-09-05 11:48:57:445 [ warning default ]:	qrc:/qml/src/gui/tray/Window.qml:5:1: module "QtQuick.Controls" is not installed
2020-09-05 11:48:57:445 [ warning default ]:	qrc:/qml/src/gui/tray/Window.qml:4:1: module "QtQuick.Window" is not installed
2020-09-05 11:48:57:445 [ warning default ]:	qrc:/qml/src/gui/tray/Window.qml:3:1: module "QtQuick" is not installed
2020-09-05 11:48:57:445 [ warning default ]:	qrc:/qml/src/gui/tray/Window.qml:2:1: module "QtQml.Models" is not installed
2020-09-05 11:48:57:445 [ warning default ]:	qrc:/qml/src/gui/tray/Window.qml:1:1: module "QtQml" is not installed
```

After installing the following packages,  I can see the main window again
(although it still disappears on me sometimes):

* qml-module-qtquick-layouts
* qml-module-qtquick-controls2
* qml-module-qtgraphicaleffects
* qml-module-qtqml-models2
* qml-module-qtqml

Also, when using GNOME there is no way to reach the main window because
it has become a tray-only application, unfortunately.  However, this
might warrant another bug report alltogether.

Kind regards,

Paul van Tilburg

-- System Information:
Debian Release: bullseye/sid
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'testing'), (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 5.7.0-3-amd64 (SMP w/4 CPU threads)
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages nextcloud-desktop depends on:
ii  libc6                     2.31-3
ii  libcloudproviders0        0.3.0-3
ii  libgcc-s1                 10.2.0-6
ii  libglib2.0-0              2.64.4-1
ii  libnextcloudsync0         3.0.1-1
ii  libqt5core5a              5.14.2+dfsg-6
ii  libqt5dbus5               5.14.2+dfsg-6
ii  libqt5gui5                5.14.2+dfsg-6
ii  libqt5keychain1           0.10.0-1
ii  libqt5network5            5.14.2+dfsg-6
ii  libqt5qml5                5.14.2+dfsg-3
ii  libqt5quick5              5.14.2+dfsg-3
ii  libqt5quickcontrols2-5    5.14.2+dfsg-2
ii  libqt5sql5-sqlite         5.14.2+dfsg-6
ii  libqt5svg5                5.14.2-2
ii  libqt5webenginecore5      5.14.2+dfsg1-4
ii  libqt5webenginewidgets5   5.14.2+dfsg1-4
ii  libqt5webkit5             5.212.0~alpha4-5
ii  libqt5widgets5            5.14.2+dfsg-6
ii  libstdc++6                10.2.0-6
ii  nextcloud-desktop-common  2.6.4-1
ii  nextcloud-desktop-l10n    3.0.1-1

Versions of packages nextcloud-desktop recommends:
ii  nextcloud-desktop-doc  3.0.1-1

nextcloud-desktop suggests no packages.

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