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Excerpts from Sam Morrison's message of 2016-06-08 16:59:37 +1000:
> We have been building our own packages for a few years now and I’ve just started to build packages for liberty.
> 
> I got an error from pbr telling me my version was incompatible. An example version we were producing was 12.0.3+a74~gea340da+trusty
> 
>  So had a read of http://docs.openstack.org/developer/pbr/semver.html <http://docs.openstack.org/developer/pbr/semver.html> and have fixed it to be this format however I’m still getting an error:
> 
> Exception occurred:
>   File "/usr/lib/python2.7/dist-packages/pbr/version.py", line 215, in from_pip_string
>     % (remainder, version_string))
> ValueError: Unknown remainder ['gea340da'] in '12.0.3.a74.gea340da'
> 
> From the website mentioned above this seems like it should be valid. I’ve had a look in the code and it looks like this type of version isn’t supported.
> 
> So is this a bug in pbr or am I doing something wrong? We build packages based on git versions so I want to keep the hash in there.
> 
> Thanks,
> Sam

This is working as designed. pbr follows PEP-440 [1] versioning,
which IIRC doesn't include version control references like git SHAs.

The version you describe appears to be the 74th alpha pre-release of
12.0.3. Is that what you intend? That's a lot of pre-releases.

pbr will automatically append a numbered dev suffix to versions,
so the 74th commit after 12.0.3 would be something like 12.0.4.dev74,
indicating that it is a development version leading to 12.0.4.

Which project are you packaging, and in what context?

Doug

[1] https://www.python.org/dev/peps/pep-0440/