+ PKG_PATH=/data/packages/NetBSD/trunk/x86_64/All /usr/tools/sbin/pkg_add -K /usr/pkg/pkgdb digest-20220214 x11-links-1.35nb1 boost-headers-1.85.0nb1 glm-1.0.1 mktools-20220614 pkgconf-2.2.0 cwrappers-20220403 checkperms-1.12 SDL2-2.30.3 boost-libs-1.85.0 pcre-8.45 SDL2_image-2.6.3nb3 freetype2-2.13.2nb1 png-1.6.43 glew-2.2.0nb2
pkg_add: package `mktools-20220614' already recorded as installed
pkg_add: package `cwrappers-20220403' already recorded as installed
xmlcatmgr-2.2nb1: copying /usr/pkg/share/examples/xmlcatmgr/catalog.etc.sgml to /usr/pkg/etc/sgml/catalog
xmlcatmgr-2.2nb1: copying /usr/pkg/share/examples/xmlcatmgr/catalog.etc.xml to /usr/pkg/etc/xml/catalog
xmlcatmgr-2.2nb1: copying /usr/pkg/share/examples/xmlcatmgr/catalog.share.sgml to /usr/pkg/share/sgml/catalog
xmlcatmgr-2.2nb1: copying /usr/pkg/share/examples/xmlcatmgr/catalog.share.xml to /usr/pkg/share/xml/catalog
pkg_add: package `png-1.6.43' was already installed as dependency, now marked as installed manually
===========================================================================
$NetBSD: MESSAGE.NetBSD,v 1.3 2021/09/08 19:19:19 nia Exp $

To start JACK on NetBSD:

$ jackd -Sr -d sun

If you have an external USB mic:

$ jackd -Sr -d sun -P /dev/audio -C /dev/audio1 -i 1

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