apache2, flask, python3 on macos 12.2 (Monterey)

   Here are the steps:

1. Install homebrew

    https://brew.sh/

2. Install apache

    brew install apache2

3. Install python

    brew install python3 

4. Install mod-wsgi (apache module to run scripts)

    pip3 install mod-wsgi

5. Modify /opt/homebrew/etc/httpd/httpd.conf; add this (and adapt names in bold to your specific installation)

LoadModule rewrite_module lib/httpd/modules/mod_rewrite.so

LoadModule wsgi_module /opt/homebrew/lib/python3.9/site-packages/mod_wsgi/server/mod_wsgi-py39.cpython-39-darwin.so

WSGIApplicationGroup %{GLOBAL}

<Directory "/Users/wahl/Development/excel_ws">

        Options Indexes MultiViews

        AllowOverride none

        Require all granted

</Directory>

WSGIScriptAlias /excel_ws /Users/wahl/Development/excel_ws/WebService.wsgi        

        assuming that the Flask application resides in /Users/wahl/Development/excel_ws and that the relative URL is /excel_ws.

6. Create the .wsgi file - this is a short python script that launches flask (in the example above, it is called WebService.wsgi residing in our flask application directory). We further assume that the Python source files reside in the directory src relative to the .wsgi file. The flask app is defined in src/WebService.py.

        #! /usr/bin/python3

    import logging

    import sys

    import os

    logging.basicConfig(stream=sys.stderr)

    sys.path.append(os.path.dirname(os.path.abspath(__file__)) + '/src')

    from WebService import app  as application

    application.secret_key = 'some super secret string'