HepMC2 release, main purpose : Powheg-06-01 contains MRs: https://gitlab.cern.ch/atlas/athena/-/merge_requests/62056 Update Powheg version to 06-01 https://gitlab.cern.ch/atlas/athena/-/merge_requests/61993 master PowhegControl: adding new processes Scalar and Vector LeptoQuark Drell-Yan production DY_SLQ and DY_VLQ - AGENE-2180 https://gitlab.cern.ch/atlas/athena/-/merge_requests/62025 Sweeping !62005 from 21.6 to master. Adding the PowhegConfig.MadSpin_paramcard option https://gitlab.cern.ch/atlas/athena/-/merge_requests/62004 Fix technical issue with write out of lhe preamble AGENE-2156 https://gitlab.cern.ch/atlas/athena/-/merge_requests/61974 Cleanup code related to HepMC