el9 LCG_104d_ATLAS_17 build for validation of Pythia8.312 contains MG3.5.3p7, GENEVA,sympy contains MRs: https://gitlab.cern.ch/atlas/athena/-/merge_requests/70056 Extend unit tests for HepMcParticleLink https://gitlab.cern.ch/atlas/athena/-/merge_requests/70580 HepMcParticleLink constructor syntax clean-up. https://gitlab.cern.ch/atlas/athena/-/merge_requests/71525 Delete most likely unused packagedoc.h https://gitlab.cern.ch/atlas/athena/-/merge_requests/71521 Simplify the StringParse.h with C++17 https://gitlab.cern.ch/atlas/athena/-/merge_requests/71520 Delete outdated TODO https://gitlab.cern.ch/atlas/athena/-/merge_requests/71548 Update LheConverterUpc.py documentation https://gitlab.cern.ch/atlas/athena/-/merge_requests/71661 Move the only c++ code from GeneratorUtils to CXXUtils https://gitlab.cern.ch/atlas/athena/-/merge_requests/71668 TrackRecordGenerator: Set attributes of particle after the particle is added to event https://gitlab.cern.ch/atlas/athena/-/merge_requests/71682 Move the documentation from packagedoc headers to README.md for Generators https://gitlab.cern.ch/atlas/athena/-/merge_requests/71681 Move from the copied LHEF.h to the LHEF3.h from Pythia8 https://gitlab.cern.ch/atlas/athena/-/merge_requests/71671 Remove unused headers and assure the polarization is set after the particle is added to the event https://gitlab.cern.ch/atlas/athena/-/merge_requests/71725 main-cleanup-ParticleDecayer https://gitlab.cern.ch/atlas/athena/-/merge_requests/71735 Revert "Merge branch 'removegeneratorutils' into 'main'" https://gitlab.cern.ch/atlas/athena/-/merge_requests/71728 Attempt to avoid code duplication in the SFGen_i https://gitlab.cern.ch/atlas/athena/-/merge_requests/71707 Move the GeneratorUtils JO scripts to EvgenProdTools https://gitlab.cern.ch/atlas/athena/-/merge_requests/71931 PowhegControl: adding ewborn parameter for fourtops process - AGENE-2128 https://gitlab.cern.ch/atlas/athena/-/merge_requests/71976 Set pythia8 path when mcatnlo_delta is True https://gitlab.cern.ch/atlas/athena/-/merge_requests/71982 LCG_104d_ATLAS_17 switch to the new layer and add an ART tests for superchic https://gitlab.cern.ch/atlas/athena/-/merge_requests/71996 Print the whole event in the TestHepMC if there was an error https://gitlab.cern.ch/atlas/athena/-/merge_requests/69737 HepMC::uniqueID should return id rather than barcode for HepMC3.