As of months ago Genshi has downloads on PyPI; download it securely.

gsnedders · gsnedders · commit 9e730ff1cccf · 2014-05-17T20:21:58.000+01:00
diff --git a/tox.ini b/tox.ini
@@ -10,7 +10,7 @@ commands =
   {envbindir}/nosetests -q
   {toxinidir}/flake8-run.sh
 install_command =
-  pip install --allow-external Genshi --allow-insecure Genshi {opts} {packages}
+  pip install {opts} {packages}
 
 [testenv:pypy]
 # lxml doesn't work and datrie doesn't make sense
