main purpose of the build: fixing hepmc_version in TagInfo to allow using 23.6 releases for MC16 and MC20 productions contains MRs: https://gitlab.cern.ch/atlas/athena/-/merge_requests/60066 MadGraph PDFs for Run3 update https://gitlab.cern.ch/atlas/athena/-/merge_requests/57430 CA-based ParticleGun configuration https://gitlab.cern.ch/atlas/athena/-/merge_requests/60138 Updating Pythia8_i components https://gitlab.cern.ch/atlas/athena/-/merge_requests/60110 Less barcodes and switch to the HepMC::is_simulation_particle https://gitlab.cern.ch/atlas/athena/-/merge_requests/60153 Use particles for comparison, not barcodes https://gitlab.cern.ch/atlas/athena/-/merge_requests/60216 Reduce the usage of barcodes https://gitlab.cern.ch/atlas/athena/-/merge_requests/60033 Implementing ComponentAccumulator-based configuration for Forward Detector Simulation https://gitlab.cern.ch/atlas/athena/-/merge_requests/60220 cppcheck: identical inner condition https://gitlab.cern.ch/atlas/athena/-/merge_requests/60273 AtlasHepMC: Add missing unordered_map include for gcc12 https://gitlab.cern.ch/atlas/athena/-/merge_requests/60285 EvgenJobTransforms: make the ART tests run for master--HepMC2 nightly https://gitlab.cern.ch/atlas/athena/-/merge_requests/60291 Pythia8B_i: allow the weights to be filled for HepMC2 running too https://gitlab.cern.ch/atlas/athena/-/merge_requests/60363 Fix FlowAfterburner compilation in master--HepMC2 https://gitlab.cern.ch/atlas/athena/-/merge_requests/60403 ComponentAccumulator-based configuration of Tile Test Beam Simulation https://gitlab.cern.ch/atlas/athena/-/merge_requests/60533 HepMcParticleLink: fix inefficient barcode processing when they are 0 https://gitlab.cern.ch/atlas/athena/-/merge_requests/60530 GenEvent: use references https://gitlab.cern.ch/atlas/athena/-/merge_requests/60532 correct format of HepMC_version TagInfo entry https://gitlab.cern.ch/atlas/athena/-/merge_requests/60565 Update xAODDecaysFinalStateFilter to use lepton flavor https://gitlab.cern.ch/atlas/athena/-/merge_requests/60536 Pass particles/vertices by const reference in Generators where appropriate https://gitlab.cern.ch/atlas/athena/-/merge_requests/60609 Backwards compatibility for 'hepmc_version' metadata