apparently, having a setup.py is the right way to do it

.travis.yml

@@ -10,12 +10,13 @@ services:
 env:
   - DJANGO_SETTINGS_MODULE=regluit.settings.travis
 
+
 before_install:
   - sudo mkdir /var/log/django
   - sudo chmod 777 /var/log/django
 
 install: 
   - pip install -r requirements_versioned.pip
-  - export PYTHONPATH="./:$PYTHONPATH"
+  - pip install .
 
 script: python manage.py test

setup.py

@@ -0,0 +1,18 @@
+from setuptools import setup, find_packages
+
+setup(
+    name='Regluit',
+    version='3.0.0',
+    description='Web application for Unglue.it',
+    author='Free Ebook Foundation',
+    author_email='info@ebookfoundation.org',
+    url='https://unglue.it',
+    packages=find_packages(exclude=[
+        'bookdata',
+        'deploy'
+        'logs',
+        'selenium',
+        'static',
+        'vagrant',
+    ]),
+)