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Original Launchpad bug 507078: https://bugs.launchpad.net/ipython/+bug/507078
Reported by: fdo.perez (Fernando Perez).
Explain better how to test an uninstalled IPython (via pythonpath manipulations).
If possible, make the package testable in-place before installation, that would be ideal. If not, explain better.
A while ago we realized that making an un-installed ipython testable caused more trouble than was worth it. It requires horrible hacks and those are very brittle, so we might as well not allow it, period.