QML deployment

[TheAssassin]

The last bit that is really missing functionality wise to implement the same functionality linuxdeployqt provides is the deployment of QML files.

I would like to combine both the QML related code in linuxdeployqt (e.g., https://github.com/probonopd/linuxdeployqt/blob/master/tools/linuxdeployqt/shared.cpp#L1513), with the script that @azubieta's Nomad software center uses to bundle its QML dependencies (https://github.com/nomad-desktop/nx-software-center/blob/master/build_scripts/appimage.include.qml.modules.py#L99).

Any help is appreciated. CC @azubieta @probonopd

[azubieta]

Just let me finish https://github.com/azubieta/appimage-releases-indexer and I'll gladly take care of it.
It's not complicated, qmlimportscanner does most of the work we just have to parse it's output and copy the qml modules into the AppDir.

[azubieta]

We must provide to our user the possibility of specifying additional "QML Modules search paths".
What do you prefer?

• a command line argument
• an environment variable

[azubieta]

WIP at qml_support branch.

[probonopd]

linuxdeployqt allows to pass in multiple -qmldir arguments.

[azubieta]

We will be using an environment variable for this goal named EXTRA_QML_IMPORT_PATHS.
It will receive as value a colon separated string list.

By example:
export EXTRA_QML_IMPORT_PATHS="/opt/qt5/qml:/opt/plasma5/"

[azubieta]

Update report.
Geting the following error while calling

linuxdeploy-plugin-qt/src/util.h

Line 26 in b5094b2

auto output = proc.communicate();

Calling: /usr/bin/qmlimportscanner  -rootPath  /home/alexis/Workspace/linuxdeploy-plugin-qt/tests/QtQuickControls2Application/  -rootPath  /home/alexis/Workspace/linuxdeploy-plugin-qt/tests/QtQuickControls2Application/build/AppDir  -importPath  /usr/lib/x86_64-linux-gnu/qt5/qml  
free(): invalid next size (normal)

[TheAssassin]

I'm not so sure about this "let's bundle an entire Qt application for testing the QML support" part of your branch. It's a lot of bloat that is forcibly shipped there...

[azubieta]

Me neither but we need it to test it. We can drop it before merge. By the way, linuxdeployqt has several.