[Unison-hackers] Seeking to bring Mac support up to date

[Alan Shutko]

I'm interested in getting the UI working again on Mac.  As mentioned in https://groups.yahoo.com/neo/groups/unison-users/conversations/topics/10918 , Unison currently does not build on OS X 10.7 or higher, because it uses the BWToolkit and Interface Builder plugin, which are no longer supported in Xcode 4.

I currently have a visually unappealing codebase which will build and run on both Xcode 3 and 4. I'm working to clean it up for submission.  After that, I am going to investigate some UI improvements: more clear display of conflicts in packages and the ability to click on a growl notification to open Unison.

Are there any other items that should be fixed for OS X?  What is the oldest version of OS X that we should retain support for?