Revert "add shims for the split."

This reverts commit ef5abe7e281ac0e9cf85a6cb9cbfe4e2dc0701d6.
Fix the get_preferred_affinity tests
Put the get_preferred_affinity argument in reverse ourder, oups
(Re-)fix the "mozart" package build issue.
Revert "Revert "add shims for the split.""

This reverts commit 16dc422e90b843909a0feb538552968606db3698.