From owner-freebsd-ports@freebsd.org  Fri Apr 15 16:49:00 2016
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Date: Fri, 15 Apr 2016 18:48:49 +0200
From: Miroslav Lachman <000.fbsd@quip.cz>
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Subject: net/samba42: conflicting Python dependencies with non-default
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There is some problem with ports framework choosing wrong Python version 
of dependencies is we have DEFAULT_VERSIONS= python=3.4   (or 3.5) in 
make.conf.
The Makefile of samba42 needs py27-dnspython, but ports framework 
chooses py34-dnspython which is wrong and them samba build failed with 
error:

samba42-4.2.7_2 depends on package: py27-dnspython>=1.9.4 - not found
*** Error code 1

I don't know where is the root of this issue.

There is PR 204972 for this problem:
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=204972

Can somebody look in to this?

Miroslav Lachman