Bug#742710: qtcreator: Welcome plugin does not work, cannot find QtQuick

[Ralf Jung <post@ralfj.de>]

Hi,

> It is, it means you are in the best position to test this! :-)
> 
> Please try the following: first install qtdeclarative5-controls-plugin. We now 
> this one is required. This will create /usr/lib/x86_64-linux-
> gnu/qt5/qml/QtQuick/Controls/*

This pulls in qtdeclarative5-quicklayouts-plugin, but it does not
suffice on its own.

> Then we have some other packages that install stuff there:
> 
> qtdeclarative5-dialogs-plugin
> qtdeclarative5-quicklayouts-plugin
> qtdeclarative5-localstorage-plugin
> qtdeclarative5-particles-plugin
> qtdeclarative5-privatewidgets-plugin
> qtdeclarative5-window-plugin
> qtdeclarative5-xmllistmodel-plugin
> 
> Do you mind trying to get which package is the one that we are missing as 
> dependency?

Actually, non of these. But I needed qtdeclarative5-qtquick2-plugin
which makes sense, considering that it complained about "import QtQuick" ;-)

This still leaves an error on startup though:

> Failed to load Style for ComboBox_QMLTYPE_54_QML_58(0x2b8f6f0)

which is fixed by installing qtdeclarative5-window-plugin. Then a combo
box shows up at the top-right of the "example" section of the welcome
page (that section is rather useless for me though as I don't have the
examples installed^^).
And a new error appears:

> QTextStream: No device

That error goes away after installing qtdeclarative5-localstorage-plugin.

So all in all, I needed

qtdeclarative5-qtquick2-plugin
qtdeclarative5-controls-plugin
qtdeclarative5-window-plugin
qtdeclarative5-localstorage-plugin

Kind regards
Ralf