[users at bb.net] Buildbot-worker 0.9.3 fails to start on Windows

[Neil Gilmore]

Hi everyone,

Our Windows workers are generally running on 2.7.12, with a few older 
back to 2.7.6 (I think, I'm too lazy to look). We start them using ssh 
under Cygwin, if that matters to you. However, the few running a release 
version are running 0.9.1. The others are running 0.9.9rc2(?) or so. I 
don't recall any significant patches. We aren't running any masters on 
Windows.

Neil Gilmore
grammatech.com

On 1/16/2017 8:25 AM, Pierre Tardy wrote:
> Hi,
>
> Buildbot at the moment only works with python 2.
> We are working at the python3 port but it is not quite ready (I'm 
> hoping we can have worker support for 0.9.4 thanks to the great work 
> from Craig)
>
> As per the Windows support, we are supporting windows by running unit 
> test suite and integration suite on appveyor.
> However, according to our statistics, we have no user accepting to 
> send info to the statistic server and running windows. :-(
> So I cannot say "it works, we have people running it". We are however 
> interested in having windows users, and are willing to help as much as 
> we can.
>
> You can see on the appveyor.yml how we install pywin32 and other 
> buildbot dependencies:
> https://github.com/buildbot/buildbot/blob/master/appveyor.yml#L13
>
> Let us know.
> Pierre
>
>
> Le lun. 16 janv. 2017 à 12:15, Grzegorz Antoniak <ga at anadoxin.org 
> <mailto:ga at anadoxin.org>> a écrit :
>
>     Hello,
>
>     I would like to know what is the preferred version of Python for
>     running
>     buildbot-worker on Windows?
>
>     Currently I'm trying 0.9.3 on Python 3.6, but it fails with an error:
>
>         File "C:\python36\lib\site-packages\twisted\spread\pb.py",
>     line 1076 [...]
>             m.update(password)
>         builtins.TypeError: Unicode-objects must be encoded before hashing
>
>     I've also tried 0.9.2 and 0.9.1, same error.
>
>     I've tried to install 0.9.3 on Python 2.7, but it failed with this
>     error:
>
>         File "c:\python27\lib\site-packages\buildbot_worker\base.py",
>     line 315[...]
>             self.numcpus = multiprocessing.cpu_count()
>         File "c:\python27\lib\multiprocessing\__init__.py", line 136,
>     in cpu_count
>             raise NotImplementedError('cannot determine number of cpus')
>         exceptions.NotImplementedError: cannot determine number of cpus
>
>     I've checked the documentation for `multiprocessing.cpu_count`, and it
>     says that this function can throw NotImplementedError, as it
>     happens on
>     my machine. I've added a simple patch to catch this exception in
>     `base.py` around line 315, the error was gone and the worker started
>     successfully, but now I'm having some problems installing `pywin32`
>     (which are not related to this mailing list) so the worker is
>     still not
>     fully operational.
>
>     So I'm wondering, what is the Python setup of the developers? Which
>     version of Python is known to work on Windows without any patches?
>
>     Regards,
>     Grzegorz Antoniak
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