Can you perform an exp-run for the update of pkgconf to 1.6.0
Exp-run looks fine
A commit references this bug: Author: bapt Date: Sun Jan 27 14:30:36 UTC 2019 New revision: 491354 URL: https://svnweb.freebsd.org/changeset/ports/491354 Log: Update to 1.6.0 PR: 235101 Exp-run by: antoine Changes: head/devel/pkgconf/Makefile head/devel/pkgconf/distinfo