ImportError: No module named extras

[Johannes Erdfelt]

The latest 0.9.25 release doesn't install with pip anymore:

(test)johannes@intel1-compute:~/virtualenvs$ pip install testtools
Downloading/unpacking testtools
  Downloading testtools-0.9.25.tar.gz (167Kb): 167Kb downloaded
  Running setup.py egg_info for package testtools
    Traceback (most recent call last):
      File "<string>", line 14, in <module>
      File "/home/johannes/virtualenvs/test/build/testtools/setup.py", line 8, in <module>
        import testtools
      File "testtools/__init__.py", line 34, in <module>
        from extras import (
    ImportError: No module named extras
    Complete output from command python setup.py egg_info:
    Traceback (most recent call last):

  File "<string>", line 14, in <module>

  File "/home/johannes/virtualenvs/test/build/testtools/setup.py", line 8, in <module>

    import testtools

  File "testtools/__init__.py", line 34, in <module>

    from extras import (

ImportError: No module named extras

----------------------------------------
Command python setup.py egg_info failed with error code 1
Storing complete log in /home/johannes/.pip/pip.log

The test virtual environment was brand new and empty.

It looks like the problem is that setup.py tries to import testtools for some reason before it's installed (which would install the extras dependency).

This recently started causing problems in OpenStack Nova (and other projects):

https://bugs.launchpad.net/nova/+bug/1102400

[Robert Collins (lifeless)]

Sorry about this, two-fold error (pip doesn't support setup_requires, and we didn't even list it in setup_requires).