Here's some notes from Nate Aune, when he tried to install Plango:

Steps to get Plango working on Leopard.

    1. Add these lines to your Plone buildout.cfg:

    [buildout]
    parts = ...
        productdistros
        
    [instance]
    ...
    products =
        ${buildout:directory}/parts/productdistros
    
    [productdistros]
    recipe = plone.recipe.distros
    urls = http://contentmirror.googlecode.com/files/ContentMirror-0-4-1.tgz

    2. Rerun buildout and create a Plone site with id "Plone"

    $ bin/buildout -v
    $ bin/instance fg

    Go to http://localhost:8080 to make sure Zope is running.
    Add a Plone site with an id of "Plone".

    3. Install PostgreSQL
    You can either install it using Macports, or get a binary, or install from source.
    $ sudo port install postgresql83-server

    Add the PostgreSQL bin directory to your path:

    Add this line to your ~/.profile 
    export PATH=$PATH:/opt/local/lib/postgresql83/bin/

    Then reload it:
    source ~/.profile

    Make the PostgreSQL data directory:

    $ mkdir ~/pgsql/data
    $ initdb -D ~/pgsql/data

    If you get this error: "FATAL: could not create shared memory segment"
    then you need to create this on Leopard:

    create /etc/sysctl.conf (if it does not already exist -- mine didn't), and add the following lines:

    kern.sysv.shmmax=167772160 kern.sysv.shmmin=1 kern.sysv.shmmni=32 kern.sysv.shmseg=8 kern.sysv.shmall=65536

    And then restart your Mac.

    (found via http://earthcode.com/blog/2008/01/postgresql_on_leopard_gotchas.html)

    Start the database with:
    postgres -D ~/pgsql/data  (in the foreground)
    -OR-
    pg_ctl -D ~/pgsql/data -l logfile start  (as a daemon)

    To get PostgreSQL to load on startup on your Mac:
    $ sudo launchctl load -w /Library/LaunchDaemons/org.macports.postgresql83-server.plist

    4. Install psycopg2
    These are the Python bindings for PostgreSQL.
    $ sudo port install py-psycopg2

    Or if you want to install from source:
    $ wget http://initd.org/pub/software/psycopg/psycopg2-2.0.9.tar.gz
    $ cd psycopg2-2.0.9
    $ /opt/local/bin/python2.4 setup.py install
    (make sure that the python is the same one that you used for installing Django and Zope)

    5. Edit the update script
    Replace all instances of '/home/andy/plone/zinstance' with the path to
    your Plone 3.2 buildout. 
    Mine is in /Users/nateaune/Documents/instances/plone32.buildout

    6. Edit the plango/settings.py file.
    For the DATABASE_USER parameter, change 'andy' to your username
    Mine is 'nateaune'

    7. Make sure you are using the correct Python
    You might have to change the line:
    cmd('python manage.py syncdb --noinput')
    to:
    cmd('/opt/local/bin/python2.4 manage.py syncdb --noinput')
    if you're using the Macports version of Python.

    8. Install Django 1.0
    $ wget http://www.djangoproject.com/download/1.0.2/tarball/
    $ tar xvfz Django-1.0.2-final.tar.gz
    $ cd Django-1.0.2-final.tar.gz
    $ /opt/local/bin/python2.4 setup.py install

    9. Make a settings.zcml in the ContentMirror dir
    Copy the file plone32.buildout/parts/productdistros/ContentMirror/settings-example.zcml to settings.zcml

    You shouldn't need to modify it unless you are using a database other than postgres,
    or if you've named it something other than 'plone'.

    10. Run the update script
    $ cd plango
    $ ./update

    This will do a whole bunch of stuff. Just pay close attention that there are no critical errors.

    11. Start up the Django instance
    $ /opt/local/bin/python2.4 manage.py runserver

    Go to http://127.0.0.1:8000/ in your browser.
    You should see the Nautica 2.2 Liquid theme with the content of your Plone site.

    11. Edit some content in your Plone site
    Edit some content in your Plone site and then refresh the same page in the Django site,
    and you should see the changes.

    12. Use the Navicat Lite for PostgreSQL
    This will let you browse the data that is stored in the database.
    http://www.navicat.com/download.html

    Navicat also makes database admin tool for MySQL and Oracle, if you'd rather use those databases instead of PostgreSQL.