@nkrabben @andrewjbtw I gave up after reading this (and i'm still resisting from upgrading my laptop to 10.13):

https://docuver.se/tmp/cabal_a_greybeard_vs_apfs_or_what_happens_when_wheels_are_reinvented.pdf

this is a mail from a thread on cabal list (archives are closed to members only) https://lists.alchemistowl.org/mailman/listinfo/cabal