QML FileDialog: module "Qt.labs.folderlistmodel" is not installed

Question

I'm trying to add a FileDialog in QML, my environment:

• Python 3.10.8
• PyQt6
• Arch Linux
• qt6-base, qt6-declarative packages installed

Code:

main.qml

import QtQuick 
import QtQuick.Window 
import QtQuick.Controls 
import QtQuick.Dialogs

Window {

    Rectangle {
        id: mainRect
        anchors.fill: parent

        Button {
            text: qsTr("Open File")
            onClicked: fileDialog.open()
        }
    }


    FileDialog {
        id: fileDialog

    }

}

main.py

import os
import sys
from PyQt6.QtGui import QGuiApplication
from PyQt6.QtQml import QQmlApplicationEngine


def main():
    app = QGuiApplication(sys.argv)
    engine = QQmlApplicationEngine()

    engine.load(os.fspath(Path(__file__).resolve().parent / "qml/main.qml"))

    if not engine.rootObjects():
        sys.exit(-1)
    sys.exit(app.exec())

if __name__ == "__main__":
    main()

When I try to run it produces this error:

file:///main.qml:20:5: QML FileDialog: Failed to load non-native FileDialog implementation:
qrc:/qt-project.org/imports/QtQuick/Dialogs/quickimpl/qml/FileDialog.qml:4 module "Qt.labs.folderlistmodel" is
not installed

Segmentation fault (core dumped)

I've tried searching the package repo and pypi to find if there's an extra package that contains this folderlistmodel but I couldn't find any.

Answer 1

I've tried FileDialog on Windows and it works fine, it seems like an Arch Linux packaging issue but I'm not sure where to report. I've used a workaround mentioned in this answer using tkinter and it works fine on both OSs.