Why doesn't setuptools 1.3.1 appear when I pip freeze?

Question

I am running virtualenvwrapper and friends on Ubuntu 12.04 (virtualenvwrapper 1.7.1.2, virtualenv 1.7.1.2, pip 1.0, Distribute 0.6.24, Python 2.7). To be able to

Answer 1

pip won't list packages that pip itself depends on unless you tell it to. You may include such packages by doing: pip freeze --all

freeze lists packages in a requirements-format - for use in requirements files etc - while list is just that, a list.

See Pip freeze vs. pip list for more details.

Answer 2

On Ubuntu setuptools is installed by the systems package manager. So it is not listed when you pip freeze. While creating a virtualenv, you will get these messages

mkvirtualenv test
New python executable in test/bin/python
Installing setuptools, pip...done.

If you do a pip freeze immediately after this, you will get something like this

argparse==1.2.1
wsgiref==0.1.2

Here setuptools and pip wont be listed.

If you want everything you can do a pip list which gives something like this.

argparse (1.2.1)
pip (1.5.6)
setuptools (3.6)
wsgiref (0.1.2)