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# Key4hep Live Notes
This is a document for taking notes during Key4hep meetings.
Date: April 7, 2020
Agenda: https://indico.cern.ch/event/906544/
Connected: Tao Lin, Weidong Li, Andre Sailer, Jiaheng Zou, Placido Fernandez, Gerardo Ganis, Xingtao Huang, Marko Petric, Graeme Stewart, Frank Gaede, Valentin Volkl, Erica Brondolin, Clement Helsens, Pere Mato
Apologies:
## Communities Round Table
## Build system / Target compiler / dependencies
* LCG_97
* released
* gcc8/9, clang8
* spack build is being adapted to the versions in LCG97
* Issue with Whizard relocability and Spack
* Fcc software building against LCG97
* Gaudi interference from DD4hep or Geant4
* iLCSoft building on top of LCG97
* Geant4 shell file
* init_ilcsoft.sh depends on thisroot.sh, order affects PYTHONPATH
* clang9 had issues with ROOT
* clang10 build in the works
* open jira tickets with problems LINK HERE
## Podio
* python3 support merged
* tagged v00-10
* Version in CMakeLists.txt
* Need to re-tag with v00-10-01
* Still discussing Metadata in podio
* Not part of current release
* Podio recipe going to upstream spack
## EDM4hep
* Tag EDM4hep
* Need a deployment of podio to check open PR
* Testing package: report at next EDM4hep meeting
* Seems to be working now
* Plan to use EDM4hep in CEPC instead of plcio
## K4FWCore
* Can be tagged as well
## MarlinWrapper
* Working on iLCSoft installation on CVMFS based on LCG_97
* Minor issue with Gaudi when self-installed
* Binary-Tag python script not executable, silently fails in cmake
* Binary-Tag goes away in Gaudi v34
* https://github.com/andresailer/GMP/pull/2/files
## TODO
* CVMFS: /cvmfs/sw.hsf.org
* /cvmfs/sw-nightlies.hsf.org
* Need automatic deployment
* Spack configuration added
* Using Gitlab CI
* gitlab.cern.ch/key4hep
* Discuss spack with SPI/HSF Packaging working group
* Spack recipes in k4hep-spack
* Define Convenors, key4hep-sw-admin
* Schedule discussion with Marco
## Done
## First release
* Content:
* EDM4hep
* K4FWCore: dataservice, +++
* Marlin Wrapper
* DD4hep plugin for EDM4hep output
* Example
* TODO: Simulate a few muons and reconstruct with MarlinWraper
* How to tag releases
* using release script from iLCSoft for individual packages
## AOB
* LCIO issue with new pyroot
* https://github.com/iLCSoft/LCIO/issues/73
* backward compatibility?
## Next meeting
April 21, 2020
## Call for Logos