key4hep-spack.sh

## Key4HEP spack organization and repository, e.g. key4hep/key4hep-spack
KEY4HEPSPACK_ORGREPO="key4hep/key4hep-spack"

## Key4HEP spack commit hash or github version, e.g. v0.19.7
## note: nightly builds could use a branch e.g. releases/v0.19
KEY4HEPSPACK_VERSION="d0a5a8d3ed386cd668a31540167d3f1317862cef"