provide the possibility to define sub-detector versions using the option file

• Problem: currently the version of the components are defined at Default.py script, we are unable to specify what version to use for each componetns.
• Changes: provide the flexibility to read the version from an option python scrip
• achived:

  • can specifiy the sub-detectors in DD4HEP

    the code changes in `Sim/Gauss/options/Geometry/DD4hep-DBTags-2023.py` to specifiy FT and Magnet

    GaussGeometry(
        # adds the geometry of FT and Magnet
        DetectorGeo = {"Detectors": ["FT", "Magnet"],"Version": {"FT": "trunk","Magnet": "trunk"}},
        # adds the hit extraction classes for FT and turns on the magnetic field
        DetectorSim={ "Detectors": ["FT", "Magnet"] },
        # adds the monitoring algorithms for FT (histograms will be produced)
        DetectorMoni={ "Detectors": ["FT"] },
    )

    the output xml file

    
    <?xml version="1.0" ?>
    <lccdd>
       <debug>
          <type name="includes" value="0"/>
          <type name="incguard" value="1"/>
       </debug>
       <includes>
          <file ref="/home/mexu/stack/Detector/compact/common/global/common.xml"/>
          <file ref="/home/mexu/stack/Detector/compact/components/Pipe/trunk/PipeCommon.xml"/>
       </includes>
       <include ref="/home/mexu/stack/Detector/compact/components/FT/trunk/FT.xml"/>
       <include ref="/home/mexu/stack/Detector/compact/components/Magnet/trunk/Magnet.xml"/>
    </lccdd>
    

  • still allows for not specifying the version of the detectors, meanning all existing tests still work

  • throw a warning, if Version is used in DetDesc DBTag python script

  # applying configuration of GaussGeometry
  # WARNING: the Version feature is intended for use exclusively with DD4HEP. Despite its inclusion in the DetDesc DBTags Python file, it 
  does not function as expected

• in long term: will be a plugin in Detector or in LHCb that allows to steer the xml file at run time