PyYAML 3.09 + Python 2.7 — easy_install installation broken, binary installer absent

[anonymous]

C:\Python27\Scripts>easy_install.exe pyyaml
install_dir c:\Python27\Lib\site-packages\
Searching for pyyaml
Reading http://pypi.python.org/simple/pyyaml/
Reading http://pyyaml.org/wiki/PyYAML
Best match: PyYAML 3.09
Downloading http://pyyaml.org/download/pyyaml/PyYAML-3.09.zip
Processing PyYAML-3.09.zip
Running PyYAML-3.09\setup.py -q bdist_egg --dist-dir d:\temp\easy_install-02p1z8\PyYAML-3.09\egg-dist-tmp-6im7x1
Creating lexicon...
Done (0.03 seconds)
error: Setup script exited with error: SandboxViolation: open('c:\\Python27\\lib\\site-packages\\pyrex-0.9.9-py2.7.egg\\Pyrex\\C
ompiler\\Lexicon.pickle', 'wb') {}

The package setup script has attempted to modify files on your system
that are not within the EasyInstall build area, and has been aborted.

This package cannot be safely installed by EasyInstall, and may not
support alternate installation locations even if you run its setup
script by hand.  Please inform the package's author and the EasyInstall
maintainers to find out if a fix or workaround is available.

[xi]

I added a binary installer for Python 2.7.