cppimport isn't packaged yet, so can't run every test yet (have to add --ignore unit/fem/test_assemble_cppimport.py --ignore unit/common/test_mpi.py --ignore unit/la/test_casters.py).

I'd also like to avoid running the bulk of actual unittests that don't exercise interactions with dependencies, since those aren't relevant for packaging, and failures aren't actionable here. So if you can point me to either a subset of tests that exercise the build and/or a subset of tests that that are most expensive and don't actually exercise interactions with dependencies so they can be safely excluded (looks like unit/fem/test_dof_permuting.py and unit/fem/test_element_integrals.py might be a start, is that accurate?)