New issue 805: Install requirements don't mention "setuptools" https://bitbucket.org/yt_analysis/yt/issue/805/install-requirements-dont-men... Erik Schnetter: I just followed the instructions on http://yt-project.org/#getyt to download and install yt. I installed the prerequisites listed after the paragraph {{{ To build yt, you will first need to install a number of Python and C libraries that yt uses for key functionality }}} but I still received an error message {{{ $ python setup.py develop Traceback (most recent call last): File "setup.py", line 9, in <module> import setuptools ImportError: No module named setuptools }}} I found that installing the package "py27-setuptools" (I am using OS X with MacPorts) helped. I suggest you list "setuptools" as prerequisite as well.