cmake PETSc4Py examples

feelpp/feelpp feelpp/cmake/modules/feelpp.dependencies.cmake :596 

Find_Package(PETSC4PY)

trilinos/Trilinos packages/PyTrilinos/CMakeLists.txt :231 

FIND_PACKAGE(PETSc4Py REQUIRED)

pism/pism CMakeLists.txt :159 

find_package(PETSc4Py REQUIRED)