bootstrap.py fails if buildout already installed in Python environment

[Stephen A. Goss]

If zc.buildout is already installed (say it was pip installed) in Python environment, the bootstrap.py script fails without reasonable explanation:

    $ python bootstrap.py
    Traceback (most recent call last):
      File "bootstrap.py", line 255, in <module>
        import zc.buildout.buildout
    ImportError: No module named zc.buildout.buildout

This is confusing because you can see that zc.buildout.buildout is available.

    $ python
    Python 2.6.5 (r265:79063, Jun 25 2011, 08:36:25)
    [GCC 4.4.4 20100726 (Red Hat 4.4.4-13)] on linux2
    Type "help", "copyright", "credits" or "license" for more information.
    >>> import zc.buildout.buildout
    >>>

It turns out that if zc.buildout is already available, bootstrap.py does not need to be run, but that is less than obvious to someone who is not intimately familiar with buildout.

[Barry Warsaw (barry)]

We're not using zc.buildout any more.