Will Xcode 7.3.1 work on macOS 10.12?

Question

I want to install and try out the new features of macOS 10.12. Also I really want to work on Xcode 8.0. But the same time I have some client projects which should written on Swi

Answer 1

To keep Xcode 7.3.1 running again besides Xcode 8.2 on macOS Sierra 10.12.2 I had to clean the following folders:

~/Library/Developer/
~/Library/Application Support/Developer
~/Library/Application Support/Xcode

Even cleaning the userdata of the specific project was helpful:

projectname.xcodeproj/xcuserdata
projectname.xcworkspace/xcuserdata

After restarting the mac and trying to open the project it crashed again because there was already content in this folder:

~/Library/Application Support/Developer/Shared/Xcode/Plug-ins

After deleting these plug-ins again it finally worked!