contains MRs: MCJobOptionsUtils package https://gitlab.cern.ch/atlas/athena/-/merge_requests/39677 Adding MGC base fragment for non-syst. running https://gitlab.cern.ch/atlas/athena/-/merge_requests/39714 MGC flake cleaning and reproducer script improvement https://gitlab.cern.ch/atlas/athena/-/merge_requests/39829 add x-section printout for HepMC->EVGEN process https://gitlab.cern.ch/atlas/athena/-/merge_requests/39890 Pythia8 UserHook to shower HDF5 input files https://gitlab.cern.ch/atlas/athena/-/merge_requests/39901 H721 library loading order issue https://gitlab.cern.ch/atlas/athena/-/merge_requests/39905 MGC Protection against multiple generate calls https://gitlab.cern.ch/atlas/athena/-/merge_requests/39970 improvements to bridge mode reweighting after MadSpin https://gitlab.cern.ch/atlas/athena/-/merge_requests/39980 Rivet_i docs: use toy events from eos https://gitlab.cern.ch/atlas/athena/-/merge_requests/40032 Sherpa2.2.11 https://gitlab.cern.ch/atlas/athena/-/merge_requests/40040 MG 2.73 https://gitlab.cern.ch/atlas/athena/-/merge_requests/40041 correct LogicalExpressionFilter so that it respects the changed weights in filters https://gitlab.cern.ch/atlas/athena/-/merge_requests/40056 Add ChargedTracksWeightFilter to generate flat spectrum in number of charged particles https://gitlab.cern.ch/atlas/athena/-/merge_requests/40105