Each of our Django projects at the CTL has a
requirements.txt, which we use to download
dependencies with pip using the --no-deps flag.
We need to explicitly list each dependency in
requirements.txt, otherwise we run into runtime
errors.
Like piprot,
pipdeptree is
a nice pip utility for getting some info around the
requirements.txt file. Unlike piprot, it's not
as simple to use. You can't do something like
piprot -o requirements.txt, where the
piprot I'm referring to here may or may not be
in the same virtualenv as the Django project.
pipdeptree needs to be installed in the same
virtualenv, and needs to be called in a slightly different way,
so I thought it was worth documenting here.
$ virtualenv ve
$ ./ve/bin/pip install -r requirements.txt
$ ./ve/bin/pip install pipdeptree
$ ./ve/bin/python -m pipdeptree
--------------------------------------------
wsgiref==0.1.2
argparse==1.2.1
ipdb==0.9.0
- setuptools
- ipython [required: >=0.10, installed: 4.1.1]
- traitlets [installed: 4.0.0]
...