Question

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Why does pip -t not work on Ubuntu 15.04?

rated 0 times [ 8] [ 0] / answers: 1 / hits: 6005 / 2 Years ago, mon, may 23, 2022, 11:48:51

I've been having an odd problem with pip on Ubuntu 15.04. When I try to install anything using the "-t" option to put it in a specific directory, it fails with the following error:

error: can't combine user with prefix, exec_prefix/home, or install_(plat)base

For instance, pip install -t <directory> <package> fails with this error.

My pip is version 1.5.6, and my Python version is 2.7.

I've run the exact same commands on my 14.10 systems with no issues, so I can only conclude that this is a problem which is particular to 15.04.

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guialk

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3 Years ago

answered 2 Years ago shadowoof · Accepted Answer

I ran into the same problem and what I noticed is that the pip in the default distro is old 1.5.6 the current released version being 7.1.0. Since is hard to track down the issue, looking there and there for the "needle in a hay stack" I removed it and installed it manually as suggested in the following :

This comment : https://github.com/pypa/pip/issues/1093#issuecomment-103127883
referenced in this stack: https://stackoverflow.com/questions/19460232/pip-list-crashes-with-an-assertionerror

Remove pip:

sudo apt-get remove --auto-remove python-pip

Download the install script :

wget https://bootstrap.pypa.io/get-pip.py

Install it back:

sudo python get-pip.py

Link commands to bin :

sudo ln -s [PIP_HOME]/bin/pip /usr/local/bin/pip

sudo ln -s [PIP_HOME]/bin/wheel /usr/local/bin/wheel

sudo ln -s [PIP_HOME]/bin/easy_install /usr/local/bin/easy_install

Where [PIP_HOME] is the directory of the pip package.

now when I run pip -V puts out :

pip 7.1.0 from /home/tiberiu/.local/lib/python2.7/site-packages (python 2.7)

Back to my root problem the command pip install -r requirements.txt -t lib success with the newest version.