Uninstaller for package on Mac OS X
As a service to my users I would like to provide an uninstall script to completely remove all traces of my application on Mac OS X. The application is installed using a package rather than just being dragged into the Applications folder because it is a daemon-type app that also requires to run a script at installation to be launched.
My thinking is to include a file called uninstall.sh and place it into /Library/Application Support/com.<mycompany>.<myapplication>/ and refer to this from the application documentation. The purpose is basically to stop the daemon if running, unload and delete the corresponding plist as well as remove any application files. Does this sound reasonable or are there better methods to accomplish this?
Also I am wondering if it is good practice to also remove traces of the package using pkgutil --forget - if I don't do this, the next time the package is installed it shows up as being upgraded instead of installed. Any recommendations or pointers to best-practice information?
Is there no standard way of doing this on OS X?
Answer
There is no standard way of doing this on OS X. Yes, shocking, I know. Apple consistently warns everyone away from package installers (among other things by providing insufficient documentation for them). They then exclusively use package installers for their own standalone apps.... go figure.
Yes, you should include pkgutil --forget.
If your customers are comfortable with this kind of script, then your approach sounds fine. If they want a "double-click-on-it" then you should probably put the uninstaller in /Applications, but avoid that if you can.
If you have a GUI, Status Item, or Preference Panel, then it's nice to put a "Uninstall" button or menu item there rather than requiring them to go mess around with Terminal.
BTW, if you go looking for the Software Delivery Guide, it's been moved for a year or so now, while they "update" it.