In Python 2, the exec statement handles encoding for us, but in
Python 3 the encoding must be specified when opening the file
(if it's not specified it uses the system locale encoding, so
previously this would work only if your locale environment variables
specified the same encoding as the setup.py file).
On Python 3.2+ the tokenize.open function is available to interpret
the encoding declaration; fixing this for python 3.0 and 3.1 is more
difficult.
* Move virtualenv creation out of TestPipEnvironment
* Remove global state and force explicit use of TestPipEnvironment
instances
* Remove "backup" virtualenv copying and instead create new
virtual environments each time.
* Remove the monkeypatched "PyPICache" functionality
* Remove things that were not being used anymore and were dead
weight
* Remove sitecustomize support which was primarily used to
monkeypatch the "PyPICache" but was used in one or two other
tests.
* Better output with the bare asserts we use throughout the tests
* Function fixtures are pretty nice, especially as a way to
start a background server or create an isolated virtualenv
