HepMC3 release using LCG_104c_ATLAS_3 contains MRS: https://gitlab.cern.ch/atlas/athena/-/merge_requests/67225 Allow skel.GENtoEVGEN.py to print platform https://gitlab.cern.ch/atlas/athena/-/merge_requests/67328 Before setting SM values for MadGraph, check whether corresponding parameters exist in model. https://gitlab.cern.ch/atlas/athena/-/merge_requests/67346 Generators: add Fastjet include Sherpa_i plugin compilation https://gitlab.cern.ch/atlas/athena/-/merge_requests/67338 Generators: add Barnard cluster (Dresden) to SherpaTarCreator https://gitlab.cern.ch/atlas/athena/-/merge_requests/67363 Herwig7_i: Change OpenLoops path https://gitlab.cern.ch/atlas/athena/-/merge_requests/67359 Remove barcodes from the TestHepMC https://gitlab.cern.ch/atlas/athena/-/merge_requests/67387 Cleanup the unneeded use of barcodes https://gitlab.cern.ch/atlas/athena/-/merge_requests/67437 Remove mentions of barcode from xAODTruthParticleLink.h https://gitlab.cern.ch/atlas/athena/-/merge_requests/67426 Changing the parent class of LheConverterUpc from EvgenAlg to EvgenAnalysisAlg. https://gitlab.cern.ch/atlas/athena/-/merge_requests/67356 Wrap usage of truth barcode as a unique ID - part 1 (ATLASSIM-6978) https://gitlab.cern.ch/atlas/athena/-/merge_requests/67453 Remove some barcodes in Generators https://gitlab.cern.ch/atlas/athena/-/merge_requests/66636 First attempt to refactor McTruthClassifier https://gitlab.cern.ch/atlas/athena/-/merge_requests/67458 Use AtlasPID Helper functions for checking PDG codes https://gitlab.cern.ch/atlas/athena/-/merge_requests/67523 Cleaning HepMcParticleLink class ahead of barcode migration (ATLASSIM-6798) https://gitlab.cern.ch/atlas/athena/-/merge_requests/67541 Adding keywords to evgen metadata https://gitlab.cern.ch/atlas/athena/-/merge_requests/65487 Refactoring of MCTruthClassifier using the DecayProducts class https://gitlab.cern.ch/atlas/athena/-/merge_requests/67535 Herwig7_i: Add new sampler options https://gitlab.cern.ch/atlas/athena/-/merge_requests/67559 adding flags to allow polarised VM decay in Starlight+EvtGen https://gitlab.cern.ch/atlas/athena/-/merge_requests/67475 Use assignment operator for TruthParticle https://gitlab.cern.ch/atlas/athena/-/merge_requests/67539 Wrap the single particle barcode 10001 https://gitlab.cern.ch/atlas/athena/-/merge_requests/67563 Replace PID functions in DeviationFramework with TruthUtils functions https://gitlab.cern.ch/atlas/athena/-/merge_requests/67620 Improving MGC gridpack naming https://gitlab.cern.ch/atlas/athena/-/merge_requests/67605 Removed the local variant of isHadron from MCTruthClassifier https://gitlab.cern.ch/atlas/athena/-/merge_requests/67648 Use MC:: namespace explicitly for MuDstarFilter https://gitlab.cern.ch/atlas/athena/-/merge_requests/67674 new LCG layer LCG_104c_ATLAS_3 https://gitlab.cern.ch/atlas/athena/-/merge_requests/67653 TruthUtils: Hepmc2 fix https://gitlab.cern.ch/atlas/athena/-/merge_requests/67667 Adding barcodes back into the GeneratorObjects and GeneratorObjectsTPCnv unit tests. https://gitlab.cern.ch/atlas/athena/-/merge_requests/67625 Use AtlasPID functions for the Generator Filters