unset PERL_MM_OPT
in build() allows the package to build for me. I found that tip here: https://forums.freebsd.org/threads/after-perl-update-only-one-of-prefix-or-install_base-can-be-given.40305/
Note that I don't understand what the side effects (if any) of doing this are. All I know is that the build completes now ;-)
Pinned Comments
FryDay commented on 2019-04-12 14:26 (UTC)
Now sourced from a github mirror. Let me know if you have any issues.