/usr/share/psi4/plugin/ is in psi4-data 1:1.1-5.
This file is owned by root:root, with mode 0o755.
..
/usr/share/psi4/plugin/ambit/
/usr/share/psi4/plugin/ambit/CMakeLists.txt.template
/usr/share/psi4/plugin/ambit/__init__.py.template
/usr/share/psi4/plugin/ambit/ambit.cc.template
/usr/share/psi4/plugin/ambit/convert.cc.template
/usr/share/psi4/plugin/ambit/convert.h
/usr/share/psi4/plugin/ambit/doc.rst.template
/usr/share/psi4/plugin/ambit/input.dat.template
/usr/share/psi4/plugin/ambit/integrals.cc.template
/usr/share/psi4/plugin/ambit/integrals.h
/usr/share/psi4/plugin/ambit/pymodule.py.template
/usr/share/psi4/plugin/aointegrals/
/usr/share/psi4/plugin/aointegrals/CMakeLists.txt.template
/usr/share/psi4/plugin/aointegrals/__init__.py.template
/usr/share/psi4/plugin/aointegrals/aointegrals.cc.template
/usr/share/psi4/plugin/aointegrals/doc.rst.template
/usr/share/psi4/plugin/aointegrals/input.dat.template
/usr/share/psi4/plugin/aointegrals/pymodule.py.template
/usr/share/psi4/plugin/basic/
/usr/share/psi4/plugin/basic/CMakeLists.txt.template
/usr/share/psi4/plugin/basic/__init__.py.template
/usr/share/psi4/plugin/basic/doc.rst.template
/usr/share/psi4/plugin/basic/input.dat.template
/usr/share/psi4/plugin/basic/plugin.cc.template
/usr/share/psi4/plugin/basic/pymodule.py.template
/usr/share/psi4/plugin/dfmp2/
/usr/share/psi4/plugin/dfmp2/CMakeLists.txt.template
/usr/share/psi4/plugin/dfmp2/__init__.py.template
/usr/share/psi4/plugin/dfmp2/doc.rst.template
/usr/share/psi4/plugin/dfmp2/input.dat.template
/usr/share/psi4/plugin/dfmp2/plugin.cc.template
/usr/share/psi4/plugin/dfmp2/pymodule.py.template
/usr/share/psi4/plugin/mointegrals/
/usr/share/psi4/plugin/mointegrals/CMakeLists.txt.template
/usr/share/psi4/plugin/mointegrals/__init__.py.template
/usr/share/psi4/plugin/mointegrals/doc.rst.template
/usr/share/psi4/plugin/mointegrals/input.dat.template
/usr/share/psi4/plugin/mointegrals/mointegrals.cc.template
/usr/share/psi4/plugin/mointegrals/pymodule.py.template
/usr/share/psi4/plugin/scf/
/usr/share/psi4/plugin/scf/CMakeLists.txt.template
/usr/share/psi4/plugin/scf/__init__.py.template
/usr/share/psi4/plugin/scf/doc.rst.template
/usr/share/psi4/plugin/scf/input.dat.template
/usr/share/psi4/plugin/scf/plugin.cc.template
/usr/share/psi4/plugin/scf/pymodule.py.template
/usr/share/psi4/plugin/scf/scf.cc.template
/usr/share/psi4/plugin/scf/scf.h.template
/usr/share/psi4/plugin/sointegrals/
/usr/share/psi4/plugin/sointegrals/CMakeLists.txt.template
/usr/share/psi4/plugin/sointegrals/__init__.py.template
/usr/share/psi4/plugin/sointegrals/doc.rst.template
/usr/share/psi4/plugin/sointegrals/input.dat.template
/usr/share/psi4/plugin/sointegrals/pymodule.py.template
/usr/share/psi4/plugin/sointegrals/sointegrals.cc.template
/usr/share/psi4/plugin/wavefunction/
/usr/share/psi4/plugin/wavefunction/CMakeLists.txt.template
/usr/share/psi4/plugin/wavefunction/__init__.py.template
/usr/share/psi4/plugin/wavefunction/doc.rst.template
/usr/share/psi4/plugin/wavefunction/input.dat.template
/usr/share/psi4/plugin/wavefunction/pymodule.py.template
/usr/share/psi4/plugin/wavefunction/wavefunction.cc.template