main purpose of the build: LCG_102b_ATLAS_21 with MG3.5, patched H7, Rivet3.1.8 contains MRs: https://gitlab.cern.ch/atlas/athena/-/merge_requests/62969 23.0-coverity-GeneratorFilters https://gitlab.cern.ch/atlas/athena/-/merge_requests/62959 Remove barcodes from particlejettools https://gitlab.cern.ch/atlas/athena/-/merge_requests/63028 Update ParentChildFilter.h to fix the nightlies https://gitlab.cern.ch/atlas/athena/-/merge_requests/63060 Update XtoVVDecayFilterExtended.cxx https://gitlab.cern.ch/atlas/athena/-/merge_requests/63034 xAODtoHepMCTool: fixed a bug where 1e5 used instead of 1e6 https://gitlab.cern.ch/atlas/athena/-/merge_requests/63039 Update TTbarWithJpsimumuFilter.cxx -- Fix the bug https://gitlab.cern.ch/atlas/athena/-/merge_requests/63104 Remove TruthHelper functions https://gitlab.cern.ch/atlas/athena/-/merge_requests/63157 Use the HepMC::is_ functions instead of comparisons of barcodes https://gitlab.cern.ch/atlas/athena/-/merge_requests/63151 Move the PileUpType from TruthHelpers to its only user https://gitlab.cern.ch/atlas/athena/-/merge_requests/63152 Remove TruthHelper routines from the code https://gitlab.cern.ch/atlas/athena/-/merge_requests/63159 Small improvements in ISF::TruthSvc https://gitlab.cern.ch/atlas/athena/-/merge_requests/63143 Remove unused EventBoost and ReweightTools https://gitlab.cern.ch/atlas/athena/-/merge_requests/63078 Drop the obsolete functions isGenInteracting and isGenSimulStable https://gitlab.cern.ch/atlas/athena/-/merge_requests/63074 Adding LHE splitting script, updating simple LHE plotter https://gitlab.cern.ch/atlas/athena/-/merge_requests/63108 Add new ShadowParticle Attribute for linking between GenEvents https://gitlab.cern.ch/atlas/athena/-/merge_requests/63086 Fix a bug in GeneratorFilters: do not assume barcode-ordered vertices https://gitlab.cern.ch/atlas/athena/-/merge_requests/63139 convert ParticleFilter to xAODParticleFilter https://gitlab.cern.ch/atlas/athena/-/merge_requests/63143 Remove unused EventBoost and ReweightTools https://gitlab.cern.ch/atlas/athena/-/merge_requests/63033 Suggested MR to split the barcode and the particle origin https://gitlab.cern.ch/atlas/athena/-/merge_requests/62922 Remove the barcodes where possible https://gitlab.cern.ch/atlas/athena/-/merge_requests/63151 Move the PileUpType from TruthHelpers to its only user https://gitlab.cern.ch/atlas/athena/-/merge_requests/63193 GeneratorFilters: Fix compilation in dev4. https://gitlab.cern.ch/atlas/athena/-/merge_requests/63240 fix initial proton status code in EventFiller.py https://gitlab.cern.ch/atlas/athena/-/merge_requests/63206 Use SPECIALSTATUS instead of the hardcoded constant https://gitlab.cern.ch/atlas/athena/-/merge_requests/63251 Consolidate TruthUtils: move the content of PIDHelpers into HepMCHelpers.h https://gitlab.cern.ch/atlas/athena/-/merge_requests/63252 Remove the dependency of TruthUtils on the CXXUtils https://gitlab.cern.ch/atlas/athena/-/merge_requests/63276 EvgenJobTransforms : allow for production with EventNumber up to max value of Int32 https://gitlab.cern.ch/atlas/athena/-/merge_requests/63227 Syncronize two MagicNumbers headers https://gitlab.cern.ch/atlas/athena/-/merge_requests/63299 Fix the decayed status to be always 2 https://gitlab.cern.ch/atlas/athena/-/merge_requests/63252 Remove the dependency of TruthUtils on the CXXUtils https://gitlab.cern.ch/atlas/athena/-/merge_requests/63329 EvgenJobTransforms: remove unneeded indent https://gitlab.cern.ch/atlas/athena/-/merge_requests/63099 Improved MagicNumbers.h comments https://gitlab.cern.ch/atlas/athena/-/merge_requests/63324 Removed HforTool https://gitlab.cern.ch/atlas/athena/-/merge_requests/63371 Remove unused interfaces https://gitlab.cern.ch/atlas/athena/-/merge_requests/63393 Fixes needed for the new version of TruthUtils https://gitlab.cern.ch/atlas/athena/-/merge_requests/63423 Remove the unused GeneratorName.h https://gitlab.cern.ch/atlas/athena/-/merge_requests/63449 Remove unused headers HepPDT https://gitlab.cern.ch/atlas/athena/-/merge_requests/63453 Move the fromDecay and findChildren functions from ThruthUtils to their only clients https://gitlab.cern.ch/atlas/athena/-/merge_requests/63200 MGC: Force b massless with 5FS in SUSY MGC includes https://gitlab.cern.ch/atlas/athena/-/merge_requests/63527 EvtGen_i+BarcodeServices: Fix clang warnings https://gitlab.cern.ch/atlas/athena/-/merge_requests/63529 EvgenProdTools: Fix compilation with hepmc2. https://gitlab.cern.ch/atlas/athena/-/merge_requests/63525 Cleanup the HepMCHelpers code https://gitlab.cern.ch/atlas/athena/-/merge_requests/63475 Switch to LCG_102b_ATLAS_21 https://gitlab.cern.ch/atlas/athena/-/merge_requests/63563 Particlegun with HepMC3 https://gitlab.cern.ch/atlas/athena/-/merge_requests/63573 Move the definition of FastCaloSimIsGenSimulStable in truthutils https://gitlab.cern.ch/atlas/athena/-/merge_requests/63597 Expand the usage of DataPool::prepareToAdd https://gitlab.cern.ch/atlas/athena/-/merge_requests/63622 Pythia8B_i: correct the weights storage https://gitlab.cern.ch/atlas/athena/-/merge_requests/63648 Powheg: few changes in parameters https://gitlab.cern.ch/atlas/athena/-/merge_requests/63385 Implement the classificiation functions for particles in Athena