Having been talked out of making an installer, I still wanted to be able to automate the creation of a .dmg file for easy deployment. Fortunately, this is very simple to do if you don’t want the .dmg to do much.
The short version is:
% hdiutil create -srcfolder dist/[app name].app [app name].dmg
With [app name] replaced with the name of your application. Obviously, you need to do a proper build of your Python application, the symbolically linked version isn’t good enough.
For example, the Date List sample app can be deployed with:
::: shell % rm -rf dist % python setup.py py2app % hdiutil create -srcfolder dist/Date\ List.app Date\ List.dmg
There are a range of features that are worth adding to a .dmg that is used to deploy software. These include things like background images, license agreements and auto opening the disk image.