The Pegasus build will fail to build on Debian 8 systems if the python-urllib3 package is installed:

[exec] Installing requests-1.2.3...
[exec] Traceback (most recent call last):
[exec] File "setup.py", line 6, in <module>
[exec] import requests
[exec] File "/home/rynge/git/pegasus/src/externals/requests-1.2.3/requests/_init_.py", line 53, in <module>
[exec] from requests.packages.urllib3.contrib import pyopenssl
[exec] File "/home/rynge/git/pegasus/src/externals/requests-1.2.3/requests/packages/urllib3/contrib/pyopenssl.py", line 42, in <module>
[exec] ssl.PROTOCOL_SSLv3: OpenSSL.SSL.SSLv3_METHOD,
[exec] AttributeError: 'module' object has no attribute 'PROTOCOL_SSLv3'

Probably related to:

http://stackoverflow.com/questions/28987891/patch-pyopenssl-for-sslv3-issue

https://launchpad.net/debian/+source/openssl/1.0.1j-1

We might just need a newer "requests" version, but it is unclear to me how that would affect other packages we ship.