Using ccache4 with poudriere

From: Nuno Teixeira <eduardo_at_freebsd.org>
Date: Sat, 24 Jun 2023 07:52:07 UTC
Hello all,

By default poudriere depends on devel/ccache when CCACHE_DIR is set.
What's the correct way to configure poudriere to use ccache4 instead?

Thanks,

-- 
Nuno Teixeira
FreeBSD Committer (ports)