HepMC3, el9, LCG_104d_ATLAS_5 contains MRs: https://gitlab.cern.ch/atlas/athena/-/merge_requests/68612 Adding python CA configuration files for TruthIO and EvgenProdTools and helper functions https://gitlab.cern.ch/atlas/athena/-/merge_requests/68686 Adding draft GENtoEVGEN_Skeleton module and cleanup of unused arguments for Gen_tf https://gitlab.cern.ch/atlas/athena/-/merge_requests/68205 Pythia8_i: Don't create stuff in a Gaudi component ctor. https://gitlab.cern.ch/atlas/athena/-/merge_requests/68700 Pythia8_i add back the by mistake reverted changes https://gitlab.cern.ch/atlas/athena/-/merge_requests/68691 Add python as default executable for PMG systematics tools https://gitlab.cern.ch/atlas/athena/-/merge_requests/68709 Generators: check momentum unit is correct in Rivet interface https://gitlab.cern.ch/atlas/athena/-/merge_requests/68775 Generators / Sherpa_i: add support for almalinux9 https://gitlab.cern.ch/atlas/athena/-/merge_requests/68821 Generators/Sherpa_i fix typo https://gitlab.cern.ch/atlas/athena/-/merge_requests/68884 Rivet_i: hepmc2 compatibility https://gitlab.cern.ch/atlas/athena/-/merge_requests/68964 Modifications in the TruthUtils for remove the code-specific functions. https://gitlab.cern.ch/atlas/athena/-/merge_requests/68972 PowhegControl: updating ggF HH process (authors' bugfix) and adding ggF HH SMEFT process - AGENE-2239 https://gitlab.cern.ch/atlas/athena/-/merge_requests/68979 Migrate PG twiki into the git README https://gitlab.cern.ch/atlas/athena/-/merge_requests/68572 Superchic 5.0 https://gitlab.cern.ch/atlas/athena/-/merge_requests/69048 Update README.md -deleted the "release" chapter. https://gitlab.cern.ch/atlas/athena/-/merge_requests/68732 Minimal working version of CA skeleton for evgen