migrate from setup.py to requirements.txt

Author: duttonw

requirements.txt

@@ -1,4 +1,8 @@
 celery==3.1.25
 kombu==3.0.37
 progressbar==2.3
-future
+future
+SQLAlchemy>=0.6.6
+requests>=1.1.0
+
+-e git+https://github.com/ckan/[email protected]#egg=ckanext-report

setup.py

@@ -60,10 +60,10 @@
     packages=find_packages(exclude=['contrib', 'docs', 'tests*']),
 
     install_requires=[
-        'SQLAlchemy>=0.6.6',
-        'requests>=1.1.0',
-        'progressbar',
-        'ckanext-report'
+      # CKAN extensions should not list dependencies here, but in a separate
+      # ``requirements.txt`` file.
+      #
+      # http://docs.ckan.org/en/latest/extensions/best-practices.html#add-third-party-libraries-to-requirements-txt
     ],
 
     # If there are data files included in your packages that need to be