On Mon, Apr 2, 2012 at 12:08 PM, Carl Meyer <[email protected]> wrote: > Hi Chris, > > On 04/02/2012 12:50 PM, Chris Jerdonek wrote: >> Hi, I'm trying to use pip to install an older, specific version of a >> package in PyPI (specifically simplejson v2.0.9): >> >> http://pypi.python.org/pypi/simplejson/2.0.9 >> >> I've tried a few variations of the syntax below, but it always seems >> to install the newest version (v2.5.0). I don't know if this is an >> issue with simplejson, how I'm using pip, or something else. Based on >> the below, can anyone say why it's not working and how to correct the >> behavior? >> >> Thanks, >> --Chris >> >> >>> sudo pip freeze -E /opt/local/bin/python >> nose==1.1.2 >>> sudo pip install -E /opt/local/bin/python 'simplejson<2.1.0' >> Downloading/unpacking simplejson<2.1.0 >> Running setup.py egg_info for package simplejson >> Installing collected packages: simplejson >> Running setup.py install for simplejson >> File "/opt/local/lib/python2.4/site-packages/simplejson/encoder.py", >> line 398 >> if (not _bigint_as_string or >> ^ >> SyntaxError: invalid syntax >> Successfully installed simplejson >> Cleaning up... >>> sudo pip freeze -E /opt/local/bin/python >> nose==1.1.2 >> simplejson==2.5.0 >>> python -V >> Python 2.4.6 >>> which python >> /opt/local/bin/python >>> which pip >> /usr/local/bin/pip > > I can't replicate this; when I "pip install 'simplejson<2.1.0'" I get > 2.0.9. The most likely cause is if you have a build/ directory in your > current working dir with an already-unpacked simplejson 2.5.0 in it; > there's a known bug in pip that causes it to not check the version if it > finds an already-unpacked source.
Thanks, Carl. Good intuition! That was the case for me. Thanks also for the information regarding -E and virtualenv. I will start using that approach. --Chris > > Also, you may want to be aware that the -E flag is deprecated and is > already removed in the latest pip release (1.1) because it does not > handle isolated virtualenvs correctly. Instead, create a virtualenv and > use the pip that is automatically installed inside it (virtualenv > path/to/venv && path/to/venv/bin/pip install simplejson). > > Carl > > > _______________________________________________ > Distutils-SIG maillist - [email protected] > http://mail.python.org/mailman/listinfo/distutils-sig > _______________________________________________ Distutils-SIG maillist - [email protected] http://mail.python.org/mailman/listinfo/distutils-sig
