Add setuptools and funcsigs explicitly to requirements

circle.yml

@@ -7,8 +7,8 @@ dependencies:
     - sudo apt-get update
     - sudo apt-get install redis-server
   override:
-    - "pip install --upgrade -r requirements.txt"     
-    - "pip install -e ."
+    - pip install --upgrade -r requirements.txt
+    - pip install -e .
 
 test:
   pre:

requirements.txt

@@ -6,4 +6,6 @@ jinja2
 python-dateutil
 humanfriendly
 psutil
+setuptools
+funcsigs
 mock