[moin-user] Migrate from 1.8.1 to 1.9.9

[Paul Boddie]

On Saturday 8. July 2017 19.39.30 Karl Auer wrote:
> 
> In the Apache error log, I see only two likely candidates. The first is
> only a warning:
> 
> WARNING MoinMoin.log:112 /usr/local/lib/python2.7/dist-
> packages/MoinMoin/support/werkzeug/filesystem.py:63:
> BrokenFilesystemWarning: Detected a misconfigured UNIX filesystem: Will
> use UTF-8 as filesystem encoding instead of 'ANSI_X3.4-1968'

This reminds me of discussions in the Python core development community, but I 
think they only concern Python 3, unless they're planning to backport them to 
Python 2.7 and break people's code.

> The second seems to be more serious (I've removed syslog prefixes, pids
> and tids for readability, and elided most of the traceback):
> 
> [wsgi:error] 2017-07-09 02:40:10,510 ERROR MoinMoin.wsgiapp:281 An
> exception has occurred [http://otherpi/].
> [wsgi:error] [remote 192.168.1.142:54646] Traceback (most recent call
> last):
> [wsgi:error] [remote 192.168.1.142:54646]   File
> "/usr/local/lib/python2.7/dist-
> packages/MoinMoin/support/werkzeug/wsgi.py", line 599, in __call__[...]
> [wsgi:error] File "/usr/local/lib/python2.7/dist-
> packages/MoinMoin/Page.py", line 1030, in parse_processing_instructions
> [wsgi:error]     if args in i18n.wikiLanguages():
> [wsgi:error] TypeError: argument of type 'NoneType' is not iterable

I hate this error! Every time I encounter it, I cannot remember what the cause 
of it is.

https://moinmo.in/MoinMoinBugs/argument_of_type_'NoneType'_is_not_iterable

If it isn't filesystem permissions within data/cache, then it could be old 
cache files that have not been eliminated, or it could be .pyc files from 
older libraries within the MoinMoin package.

Paul