The info here is based on the post Fixing Python, virtualenv and pip on Mountain Lion

Command Line Tools

Install pip and virtualenv

sudo easy_install pip
sudo pip install virtualenv

Install basic dependencies

Install homebrew:

ruby -e "$(curl -fsSkL raw.github.com/mxcl/homebrew/go)"

Install binary python libraries build dependencies:

brew install jpeg libpng libxml2 libxslt

Add locale settings (in case you’re not UTF-8), put in your ~/.profile:

export LANG="en_US.UTF-8"
export LC_COLLATE="en_US.UTF-8"
export LC_CTYPE="en_US.UTF-8"
export LC_MESSAGES="en_US.UTF-8"
export LC_MONETARY="en_US.UTF-8"
export LC_NUMERIC="en_US.UTF-8"
export LC_TIME="en_US.UTF-8"
export LC_ALL=

And source them (to have them updated in the current shell):

source ~/.profile

Creating and Activating the virtualenv

Navigate in a terminal to the directory you want the environment created in (usually under your home directory). We’ll name the created environment oknesset.

Once in that directory:

virtualenv oknesset

We need to activate the virtual environment (it mainly modifies the paths so that correct packages and bin directories will be found) each time we wish to work on the code.

To do it, we’ll source the activation script (to set env vars):

cd oknesset/
. bin/activate

Note the changed prompt which includes the virtualenv’s name.

Installing PDF Command Line tools (Optional. This is only needed if you want to work on the scrapers)

Now we will install Poppler, which is a package that contains pdfinfo and pdftotext. Both are requirements for running the scrapers.

brew install poppler

Note that oknesset will look for the XPATH tools on the PATH environment variable.

Getting the Source Code (a.k.a Cloning)

Now we’ll clone the forked repository into the virutalenv. Make sure you’re in the oknesset directory and run:

git clone https://github.com/your-username/Open-Knesset.git

Replace your-username with the username you’ve registered at GitHub.


You can also clone with ssh keys, in that case follow the github guide on ssh keys. Once you’ve done that, your clone command will look like:


Installing requirements

Still in the terminal with the virtualenv activated, inside the oknesset directory, run:

pip install -r Open-Knesset/requirements.txt

And wait …

Once done, proceed to Initial Testing, Development DB & Server.