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svn:author
V 5
koobs
K 8
svn:date
V 27
2019-09-07T12:50:47.273651Z
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V 390
devel/py-google-pasta: Add missing dependency

six is a documented [1][2] dependency, add it to install_requires
accordingly.

While I'm here, add a test target and patch setup.py so it doesn't run
the tests twice.

[1] https://github.com/google/pasta#dependencies
[2] https://github.com/google/pasta/pull/77

Approved by:	portmgr (blanket(s): missing dependencies, framework)
MFH:		2019Q3

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