pkg_add: Warning: package `digest-20160304' was built for a platform:
pkg_add: NetBSD/x86_64 8.99.8 (pkg) vs. NetBSD/x86_64 8.99.9 (this host)
pkg_add: Warning: package `cwrappers-20171108' was built for a platform:
pkg_add: NetBSD/x86_64 8.99.8 (pkg) vs. NetBSD/x86_64 8.99.9 (this host)
pkg_add: Warning: package `checkperms-1.11nb1' was built for a platform:
pkg_add: NetBSD/x86_64 8.99.8 (pkg) vs. NetBSD/x86_64 8.99.9 (this host)
pkg_add: Warning: package `ruby24-base-2.4.2' was built for a platform:
pkg_add: NetBSD/x86_64 8.99.8 (pkg) vs. NetBSD/x86_64 8.99.9 (this host)
pkg_add: Warning: package `libyaml-0.1.7' was built for a platform:
pkg_add: NetBSD/x86_64 8.99.8 (pkg) vs. NetBSD/x86_64 8.99.9 (this host)
===========================================================================
$NetBSD: MESSAGE,v 1.1 2017/06/18 13:45:11 taca Exp $

Note that this is a minimal package.

The original ruby-2.4.2 distribution includes more extension
libraries, some of which are provided as separate packages:

	databases/ruby-gdbm:		GDBM module
	devel/ruby-fiddle:		Fiddle module
	devel/ruby-readline:		readline module

===========================================================================