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Date: Thu, 28 Jan 2016 18:48:12 -0500
From: Garrett Wollman <wollman@csail.mit.edu>
To: Slawa Olhovchenkov <slw@zxy.spb.ru>
Cc: freebsd-pkgbase@freebsd.org
Subject: Re: Packaging the FreeBSD base system with pkg(8)
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<<On Thu, 28 Jan 2016 19:06:22 +0300, Slawa Olhovchenkov <slw@zxy.spb.ru> said:

> What about upgrade strongly outdated system?
> For example 11.0 at time 18.0? I.e. packages for 11.0 don't available,
> pkg from 11.0 don't undertund package base from 18.0 and etc.

We've never supported this for source upgrades; I don't see any reason
to expect it to work for binary upgrades either.  At a minimum you
should expect to have to upgrade 11.0 -> latest 11.x -> latest 12.x ->
... -> latest 17.x -> 18.0.

-GAWollman