What index is buildout really using?

I'm trying to install couchdbkit using following buildout config:

[buildout]
parts = eggs
include-site-packages = false
versions = versions

[eggs]
recipe = zc.recipe.egg:eggs
eggs =
    couchdbkit

[versions]
couchdbkit = 0.6.3

It installs package successfully but I get numerous errors like this during setup on some machines:

Download error on http://hg.e-engura.org/couchdbkit/: [Errno -2] Name or service not known -- Some packages may not be found!

Be default buildout should find packages using this index. But I can't understand source of this weird hostname. Nothing here points to this location.

How does it actually work?

Solution

The underlying setuptools code also scans for homepage and download links from the simple index and does this quite aggressively.

The couchdbkit setup.py file lists http://hg.e-engura.org/couchdbkit/ as the homepage, so all homepage links on the simple index link there.

You can prevent zc.buildout from trying to connect to that host by setting up a whitelist of hosts it can connect to:

[buildout]
# ...

allow-hosts =
   *.python.org
   *.google.com
   *.googlecode.com
   *.sourceforge.net

for example.