Gabriel Gabriel - 1 year ago 83
Python Question

Install rpy2 inside virtualenv (can't find library)

I have a Python virtualenv set up with pyenv-virtualenv. I installed the R statistical software, and now I need to install the rpy2 package to allow communication between Python and R.

Both Python v2.7.12 and R version 3.3.1 (2016-06-21) are installed.

Attempting to install

pip install rpy2
fails with:

/usr/bin/ld: no se puede encontrar -llzma
collect2: error: ld returned 1 exit status
error: command 'gcc' failed with exit status 1

Command "/home/gabriel/.pyenv/versions/2.7.12/envs/test-env/bin/python2.7 -u -c "import setuptools, tokenize;__file__='/tmp/pip-build-b7O2v3/rpy2/';exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --record /tmp/pip-4SXyxe-record/install-record.txt --single-version-externally-managed --compile --install-headers /home/gabriel/.pyenv/versions/2.7.12/envs/asteca-env/include/site/python2.7/rpy2" failed with error code 1 in /tmp/pip-build-b7O2v3/rpy2/

no se puede encontrar -llzma
can't find -llzma

is already installed in my system.

How can I bypass this issue?

Answer Source

I would finally install the package successfully.

The issue was that I had installed the python-dev library after the virtualenv was created. This caused the installation of the rpy2 package to fail.

The solution was to uninstall the virtualenv and create again from scratch.