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. 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
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