pkg/53332: py-gflags cannot be installed for several Python versions at once

[bsiegert%gmail.com@localhost]

>Number:         53332
>Category:       pkg
>Synopsis:       py-gflags cannot be installed for several Python versions at once
>Confidential:   no
>Severity:       serious
>Priority:       low
>Responsible:    pkg-manager
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Wed May 30 20:15:00 +0000 2018
>Originator:     Benny Siegert
>Release:        pkgsrc-current as of 2018-05-30
>Organization:
The NetBSD Foundation
>Environment:
NetBSD netbsd-current2.c.gobuilder-bsiegert.internal 8.99.2 NetBSD 8.99.2 (GENERIC) #0: Sat Sep 16 09:28:38 UTC 2017  mkrepro%mkrepro.NetBSD.org@localhost:/usr/src/sys/arch/amd64/compile/GENERIC amd64
>Description:
===> Installing binary package of py36-gflags-3.1.2nb1
pkg_add: Conflicting PLIST with py27-gflags-3.1.2nb1: bin/gflags2man.py
pkg_add: 1 package addition failed
*** Error code 1
>How-To-Repeat:
Install py27-gflags, then py36-gflags.
>Fix:
The script needs to get a versioned name and perhaps a pkg_alternatives entry.