force use of alsa when using QSound

[rhx9]

Hi,
I'm trying to run a qt app in a raspberry pi in a minimal fashion.
to keep things minimal i opted not to install pulseaudio and instead use just also.
now when I play an audio file qt tries to play it using pulseaudio instead of alsa, how can I tell it to use alsa instead?

a simple app to demonstrate the problem:

import sys
from PyQt5 import QtWidgets as qtw

from PyQt5.QtMultimedia import QSound,QAudioDeviceInfo,QAudio


class mainwindow(qtw.QWidget):
    def __init__(self,*args, **kwargs):
        
        super().__init__(*args, **kwargs)
        self.gridLayout = qtw.QGridLayout()
        self.setLayout(self.gridLayout)
        self.press = qtw.QPushButton('play sound')
        self.gridLayout.addWidget(self.press,1,1,1,1)
        say = QSound("reactivate.wav")
        self.press.clicked.connect(lambda:say.play())
        self.show()



app = qtw.QApplication(sys.argv)

w = mainwindow()
ret = app.exec_()
sys.exit(ret)

when running the app on a system that uses pulseaudio or in windows the app works as expected, but when I move the app to the raspberrypi and run it it shows this:

PulseAudioService: pa_context_connect() failed
which should obviously not be happening since it should fallback to alsa, so how can I force qt to use alsa instead?