I tried to install gevent today but had some issues on OSX 10.6.7 and Python 2.7.1. This version of python is a pretty safe bet with wide support for various libs. As always you should be using virtualenv.

Lets get started (at this point you should have already setup a virtualenv environment). You’ll note that I like to build each package separately as any number of issues could arrise in the build process. With less noise I’m able to debug the issues, I recommend you do the same unless you know for sure your setup is ready to go and expect no issues ;-) 

Libevent

First I like to grab libevent via macports. Ignore this if you’ve already done it on your system.

sudo ports install libevent

Alternatively you could build it yourself or use Homebrew. By the way, both MacPorts and Homebrew do use the newer Libevent2.X.X branch.

Install cython

pip install cython

Install greenlet (optional as gevent will build this).

pip install greenlet

Clone, Build, Install gevent.

hg clone https://bitbucket.org/denis/gevent

I like to first build gevent to see if everything went right. Change to the gevent directory first and then:

python setup.py build

If all went well go ahead and install:

python setup.py install

Note on MacPorts

If you installed Python 2.7 from MacPorts, you’ll be happy to see they’ve already got a gevent port for you. Install like so:

sudo port install py27-gevent