Sure, here's a tutorial on how to install django-wiki on Elementary OS Latest using the following steps:

1. Update your apt-get repository

   sudo apt-get update
   

2. Install the necessary prerequisites

   sudo apt-get install python3-pip python3-venv libpq-dev postgresql postgresql-contrib gettext
   

3. Create a new PostgreSQL database for django-wiki

   sudo -u postgres createdb djangowiki
   

4. Create a new Python virtual environment

   python3 -m venv env
   source env/bin/activate
   

5. Install django and psycopg2 through pip. Up until the 3.0 branch, django-wiki also supported the latest release of Django 2.x.

   pip install Django==3.2 psycopg2-binary
   

6. Install django-wiki through pip

   pip install django-wiki
   

7. Add django-wiki to your project's INSTALLED_APPS setting. In your project's settings.py file, add 'wiki' to the end of the INSTALLED_APPS list:

   INSTALLED_APPS = [
       ...
       'wiki',
   ]
   

8. Run the migrations to create the necessary tables in your PostgreSQL database

   python manage.py migrate
   

9. (Optional) Create a superuser to use the admin interface

   python manage.py createsuperuser
   

10. Run the django development server

python manage.py runserver

11. Visit http://localhost:8000/wiki/ to view your new django-wiki and start creating your wiki pages!

That's it! You should now have django-wiki up and running on your Elementary OS Latest machine.