[source synchronization hooks] Fix/enhance system source hooks
They are broken if launched during repository initialization (this was not the
case yet, but will be soon...). Add additional checks to ensure one doesn't try
to store system source config in the database, as it will be ignored in favor of
the "sources" file.
@echo off
rem = """-*-Python-*- script
rem -------------------- DOS section --------------------
rem You could set PYTHONPATH or TK environment variables here
python -x "%~f0" %*
goto exit
"""
# -------------------- Python section --------------------
import sys
from os.path import join, dirname, normpath
sys.path.insert(0, normpath(join(dirname(__file__), '..', '..')))
from cubicweb.cwctl import run
run(sys.argv[1:])
DosExitLabel = """
:exit
rem """