You can test the creation of the input files and the event generation step:
bash
source /cvmfs/sw-nightlies.hsf.org/key4hep/setup.sh
cd build
ctest --verbose
Setting up with
source /cvmfs/sw-nightlies.hsf.org/key4hep/setup.sh
cd build
cmake ../CMakeLists.txt -DCMAKE_INSTALL_PREFIX=../install
make install
k4_local_repowill extract the global paths and set the executables to the local install directory instead of the release. The runscripts therefore will run automatically with the executables you have modified