Add pip-tools to manage dependency versioning (#444)

Makefile

@@ -90,14 +90,23 @@ test: test-unit test-integration test-functional
 	pip install --upgrade pip
 	@# Constrain setuptools because pylint is not compatible with newer versions.
 	pip install setuptools==33.1.1
+	pip install --upgrade pip-tools
 
 init: .pre-init
 	$(call print_msg, Installing requirements... )
-	pip install --upgrade -r requirements.txt
+	pip-sync requirements.txt
 
 init-dev: .pre-init
 	$(call print_msg, Installing dev requirements... )
-	pip install --upgrade -r dev-requirements.txt
+	pip-sync requirements.txt dev-requirements.txt
+
+deps:
+	pip-compile requirements.in
+	pip-compile dev-requirements.in
+
+deps-upgrade:
+	pip-compile -U requirements.in
+	pip-compile -U dev-requirements.in
 
 pylint:
 	$(call print_msg, Running pylint... )

appveyor.yml

@@ -1,5 +1,6 @@
 install:
   - "SET PATH=C:\\Python34;C:\\Python34\\Scripts\\;%PATH%"
+  - pip install -r requirements.txt
   - pip install -r dev-requirements.txt
 
 environment:

dev-requirements.in

@@ -0,0 +1,8 @@
+coverage
+genty
+hypothesis
+nose
+nosexcover
+pep8
+pex
+pylint

dev-requirements.txt

@@ -1,10 +1,22 @@
--r requirements.txt
-astroid==1.4.0  # for pylint
+#
+# This file is autogenerated by pip-compile
+# To update, run:
+#
+#    pip-compile --output-file dev-requirements.txt dev-requirements.in
+#
+
+astroid==1.4.9            # via pylint
 coverage==3.7.1
 genty==1.1.0
 hypothesis==1.9.0
+isort==4.3.4              # via pylint
+lazy-object-proxy==1.3.1  # via astroid
+mccabe==0.6.1             # via pylint
 nose==1.3.4
 nosexcover==1.0.10
 pep8==1.5.7
 pex==1.3.1
 pylint==1.6.5
+six==1.11.0               # via astroid, genty, pylint
+wheel==0.29.0             # via pex
+wrapt==1.10.11            # via astroid

requirements.in

@@ -0,0 +1,10 @@
+configobj
+fysom
+logbook
+prometheus_client
+psutil
+pyyaml
+requests
+termcolor
+tornado
+typing

requirements.txt

@@ -1,12 +1,18 @@
-# Install with "pip install -r requirements.txt"
+#
+# This file is autogenerated by pip-compile
+# To update, run:
+#
+#    pip-compile --output-file requirements.txt requirements.in
+#
 
 configobj==5.0.6
 fysom==2.1.2
-Logbook==0.7.0
-prometheus_client==0.0.19
+logbook==0.7.0
+prometheus-client==0.0.19
 psutil==2.2.0
-PyYAML==3.11
+pyyaml==3.11
 requests==2.3.0
+six==1.11.0               # via configobj
 termcolor==1.1.0
 tornado==3.2.2
 typing==3.6.1