portupgrade fails possibly due to py27-asn1 rename to py-pyasn1

[Graham Menhennitt]

Hi all,

I updated my ports collection the other day and ran portupgrade. It
fails on the devel/py-pyasn1 port with the error:

===>  Installing for py27-pyasn1-0.1.9
===>   py27-pyasn1-0.1.9 depends on package: py27-setuptools27>0 - found
===>   py27-pyasn1-0.1.9 depends on file: /usr/local/bin/python2.7 - found
===>  Checking if py27-pyasn1 already installed
===>   Registering installation for py27-pyasn1-0.1.9 as automatic
Installing py27-pyasn1-0.1.9...
pkg-static: py27-pyasn1-0.1.9 conflicts with py27-asn1-0.1.8,1 (installs
files into the same place).  Problematic file:
/usr/local/lib/python2.7/site-packages/pyasn1/__init__.py
*** Error code 70

Stop.

I suspect it's because this port was recently renamed from
devel/py27-asn1 (see
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=204567). I can't see
any message in UPDATING that's relevant.

Any clues please?

Thanks,
    Graham