Turnkey software stack (Key4hep)

Studying the physics potential of future colliders requires a well maintained, easy to use software stack. The Key4hep projects aims at providing such a stack by combining the efforts of all the involved communities and by fostering collaboration amongst them. In the context of this AIDAinnova deliverable several core components of this software ecosystem have been brought to production readiness, or close to it. These include the common event data model, EDM4hep; the PODIO toolkit that is used to implement it; as well as some core framework components that provide the necessary interfaces for algorithm developers. Additionally, workflows for building and deploying the whole software stack have been developed and are now used routinely. In this report an overview of the core components is given, along with the developments that were accomplished to make it possible to do comprehensive physics studies with the Key4hep software ecosystem.