OK, with this PR, I think now `PYPI_SOURCE` could be removed from above and templated as well, like:

```
# fi. Cython, Sphinx
('PYPI_SOURCE', 'ttp://pypi.python.org/packages/source/%(nameletter)s/%(name)s', 
 +     'pypi source url'),
# fi. Greenlet, PyZMQ 
('PYPI_LOWER_SOURCE', 'ttp://pypi.python.org/packages/source/%(nameletterlower)s/%(namelower)s',
 +     'pypi source url'),
```