build: fix bind errors in darwin sandboxes
build: fix bind errors in darwin sandboxes

See https://github.com/NixOS/nix/blob/5f6840fbb49ae5b534423bd8a4360646ee93dbaf/src/libstore/build.cc#L2961

urbit/urbit,urbit/urbit,urbit/urbit,ngzax/urbit,ngzax/urbit,urbit/urbit,ngzax/urbit,ngzax/urbit,ngzax/urbit,ngzax/urbit,urbit/urbit,ngzax/urbit,urbit/urbit,urbit/urbit