run-tests.sh "Could not find any downloads that satisfy the requirement PIL"

[jimstutt]

web-animations-js/$> ./run-tests.sh

gives:

Downloading pyscreenshot-0.3.2.tar.gz
Running setup.py (path:/home/jim/Sandbox/AzimuthCode/web-animations-js/tools/python/build/pyscreenshot/setup.py) egg_info for package pyscreenshot
warning: no files found matching 'CHANGES*'
no previously-included directories found matching 'docs/_build'
Downloading/unpacking PIL (from -r requirements.txt (line 10))
Could not find any downloads that satisfy the requirement PIL (from -r requirements.txt (line 10))
Some externally hosted files were ignored (use --allow-external PIL to allow).
Cleaning up...
No distributions at all found for PIL (from -r requirements.txt (line 10))
Storing debug log for failure in /home/jim/.pip/pip.log
Unable to install the required dependencies. Please see error output above.

with Firefox-0.24.5 on Centos-6.5.

[alancutter]

Seems to be related to this change in pip: https://github.com/pypa/pip/blob/c2361e72da2c31a3596d49dc5fccb7d2bdb8c032/CHANGES.txt#L12-L15