You’re installing GeoDjango and you meet this error “django.core.exceptions.ImproperlyConfigured: Could not import user-defined GEOMETRY_BACKEND “geos” while trying to runserver (or any other command) in your project. Check the following in order of severity:
Have you included this in your .bash_profile (or equivalent)
Where 91 is the version of postgres you’re using.
If that doesn’t work, I would try reinstalling all the packages listed here: https://docs.djangoproject.com/en/dev/ref/contrib/gis/install/#macports
Make sure you’re getting the right versions for each package and that postgis is installing to the right postgres!