Jed, I don’t like the location of cmakeboot.py cmakegen.py They don’t belong in the root config directory, since they are just some particular special tool. Do they belong in the recently created config/BuildSystem/config/utilities or somewhere else? Branch barry/remove-sidl Thanks Barry ~/Src/petsc barry/remove-sidl $ ls config BuildSystem builder.py cmakeboot.py cmakegen.py configure.py install.py PETSc builder2.py cmakeboot.pyc cmakegen.pyc examples manifest.in