Instructions on how to setup an OSX developer machine for (python/django) development

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osx_developer_installation.rst
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OSX Developer System installation

This guide assumes a fresh install of Mac OSX 10.6 Snow Leopard or 10.7 Lion.

Brew User

Create the user "brew" with the Standardpassword. Open a console as brew or switch to the brew user using sudo su - brew.

Xcode

Install Xcode and the Command Line Tools from inside Xcodes Preferences. (You can use the App Store to install Xcode)

Homebrew

Follow https://github.com/mxcl/homebrew/wiki/installation to get the basic setup up and running. (the default, not the alternate installs)

On a completely fresh Lion install I had to use /usr/bin/ruby -e "$(curl -fsSL https://raw.github.com/gist/1140207)" for the initial install. This is a fork of the install script by @jacknagel that works around some permission issues. https://gist.github.com/1140207

Don't forget to install the requirements (Xcode, X11, Java Developer Update) mentioned in the installation guide.

python and stuff

See https://github.com/mxcl/homebrew/wiki/Homebrew-and-Python and https://github.com/mxcl/homebrew/wiki/Gems%2C-Eggs-and-Perl-Modules for details.

the basics:

brew install python
/usr/local/share/python/easy_install pip
/usr/local/share/python/pip install --upgrade distribute

homebrew sets things up so that all packages installed via python setup.py install, easy_install or pip get their commands installed to /usr/local/share/python/ by default (see the above link for an explanation). So the first rule of business is to add that path to your PATH. Also if you want to use your homebrew python (and other homebrew stuff) by default, /usr/local/bin should be all the way at the front of your PATH.

~/.bash_profile:

PATH=/usr/local/bin:/usr/local/share/python:$PATH
export PATH

Note

remember to open a new terminal or call source ~/.bash_profile in all of your open terminal windows to get PATH updated.

Before installing stuff with pip, make sure the above PATH changes worked and you are using the correct version.:

pip --version

should return something like (a path with /usr/local/):

pip 1.0.2 from /usr/local/lib/python2.7/site-packages/pip-1.0.2-py2.7.egg (python 2.7)

PIL

install some dependencies:

brew install libjpeg
brew install lcms
brew install libtiff

If you don't need FREETYPE support the regular pip install PIL will work. There is no real need to install PIL globally then.

If you need FREETYPE, choose one of these three options. I recommend Pillow:

Pillow

Pillow is an alternative Distribution of PIL:

pip install Pillow

Pillow does a great job of finding all the dependencies it needs in OSX. But it sucks a bit if an other packages list PIL as a dependency, because Pillow will not be recognized as a valid PIL installation and PIL will be installed again.

PIL globally with homebrew

Homebrew has a formula for PIL:

brew install pil

PIL with patching setup.py

Since PIL is not packaged correctly, setup.py needs to be tweaked.

Use the newest version of PIL from http://www.pythonware.com/products/pil/ and edit FREETYPE_ROOT = ("/usr/x11/lib","/usr/x11/include",) in setup.py. Then:

python setup.py build_ext -i
python setup.py install

PIL compatibility

Some python packages don't work when PIL is installed with the PIL prefix. Add a PIL.pth file in /usr/local/lib/python2.7/site-packages/PIL.pth containing the string PIL. Now both from PIL import Image and import Image will work.

This oneliner will do exactly that:

echo "PIL" > /usr/local/lib/python2.7/site-packages/PIL.pth

Aggdraw

aggdraw provides much better anti-aliasing than PIL . And lots of other stuff.

use this version: http://bitbucket.org/2degrees/aggdraw-64bits/src

this needs mercurial to be installed (pip install mercurial)

mkdir ~/tmp
cd ~/tmp
hg clone https://stefanfoulis@bitbucket.org/2degrees/aggdraw-64bits
cd aggdraw-64bits
/usr/local/bin/python setup.py build_ext -i
/usr/local/bin/python setup.py install

Enabling freetype does not work for me. Please share if you find a way :-)

Other graphics related stuff

brew install ghostscript
brew install imagemagick
# barcode (qrcode and others) reading lib
brew install zbar
pip install zbar

MySQL

server:

brew install mysql
# look at the instructions brew prints after installation. this is the short version:
unset TMPDIR
mysql_install_db --verbose --user=`whoami` --basedir="$(brew --prefix mysql)" --datadir=/usr/local/var/mysql --tmpdir=/tmp
mkdir -p ~/Library/LaunchAgents
cp /usr/local/Cellar/mysql/5.5.14/com.mysql.mysqld.plist ~/Library/LaunchAgents/
launchctl load -w ~/Library/LaunchAgents/com.mysql.mysqld.plist
# set a root password
/usr/local/Cellar/mysql/5.5.14/bin/mysqladmin -u root password 'new-password'

client:

brew install mysql-connector-c
pip install mysql-python

Postgres

server:

PYTHON=/usr/local/bin/python  brew install postgresql
# look at the instructions brew prints after installation. this is the short version:
initdb /usr/local/var/postgres
cp /usr/local/Cellar/postgresql/9.0.4/org.postgresql.postgres.plist ~/Library/LaunchAgents/
launchctl load -w /usr/local/Cellar/postgresql/x.x.x/org.postgresql.postgres.plist
createuser # create the initial postgres user

python client bindings (does not work without the server):

pip install psycopg2

postgis / geodjango

packages:

brew install postgis # this will handle installing postgres, geos, proj4, and postgis
brew install gdal

creating a spatially-enabled database template:

createdb template_postgis # create a standard postgres db
createlang plpgsql template_postgis # enable the PL/pgSQL PostGIS functions
psql -d template_postgis -f /usr/local/Cellar/postgis/1.5.3/share/postgis/postgis.sql
psql -d template_postgis -f /usr/local/Cellar/postgis/1.5.3/share/postgis/spatial_ref_sys.sql

Creating a new database based on template_postgis:

createdb -T template_postgis [yourdatabase]

Alternatively it is possible to enable spatial functions on a existing databases by calling the above commands for creating template_postgis (except createdb, of course). Just use your existing database name instead of template_postgis

Add correct userrole:

psql -s postgres
alter user postgres with role superuser;

MongoDB

brew install mongodb # look at the instructions brew prints after installation. this is the short version: cp /usr/local/Cellar/mongodb/1.8.2-x86_64/org.mongodb.mongod.plist ~/Library/LaunchAgents/ launchctl load -w ~/Library/LaunchAgents/org.mongodb.mongod.plist

Mongohub (http://mongohub.todayclose.com/) is an awesome OSX ui for mongodb.

Other useful tools

git and hg:

brew install wget
brew install git
brew install hub
brew install git-flow
brew install gist
brew install git-extras git-hg git-multipush git-sh git-svn-abandon git-utils
pip install mercurial

hub is a useful extension to make git github aware.

gist is a commandline interface to github gists.

I had problems installing mercurial with pip on a 32bit MacBook Pro (Core Duo and less) because it failed to compile the 64bit version of the mercurial.base85 extension. So I downloaded the mercurial 1.8.2 package from pypi and removed -arch x86_64 near the end of setup.py and the ran python setup.py install and it worked fine.

xgettext

install and make the command globally available:

brew install gettext
brew link gettext

more useful stuff

brew install ssh-copy-id
brew install vcprompt
pip install virtualenv
pip install virtualenvwrapper
brew install bash-completion
pip install ipython
pip install bpython

the most useful package. this one is a must.:

brew install cowsay
cowsay You can now code python on OSX. Congratulations!

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