I'm trying to write a standalone script that writes a shapefile. I've tried something like :

from qgis.core import *
from qgis.PyQt.QtCore import QVariant
from qgis.utils import QGis


QgsApplication.setPrefixPath("/usr/bin/qgis", True)
qgs = QgsApplication([], False)

qgs.initQgis()

fields = QgsFields()
fields.append(QgsField("ID_HYD", QVariant.Int))
fields.append(QgsField("SBD_KM2", QVariant.Double))


writer = QgsVectorFileWriter("/home/sylvain/test.shp",
                             "CP1250",
                             fields,
                             QGis.WKBPoint,
                             None,
                             "ESRI Shapefile")
      
qgs.exitQgis()

The issue is as follow :

/usr/bin/python3.5 /home/sylvain/test.py
Must construct a QGuiApplication first.

Process finished with exit code 1

Is there a way to write a shapefile on drive without constructing a GUIApplication ?

If not, how should I do do create such an item ?