This port will be removed on 2020-12-31 if not fixed
Fix committed, thanks!
A commit references this bug: Author: yuri Date: Thu Sep 24 20:36:10 UTC 2020 New revision: 549949 URL: https://svnweb.freebsd.org/changeset/ports/549949 Log: audio/csound: Remove unecessary python-2.7 requirement PR: 249581 Reported by: swills Changes: head/audio/csound/Makefile