Module compiled with Swift 3.0 cannot be imported in Swift 2.3

Question

This is what I do:

import BSTableViewReorder

and get the following error:

Module compiled with Swift 3.0 cannot be i

Answer 1

in my case, the framework developers added this line in the code that was intended for the Podfile:

config.build_settings['SWIFT_VERSION'] = '2.3' # or '3.0'

as you can see, they defaulted to '2.3', which caused problems because i was running 3.0. simply removing the '2.3' # or and leaving the '3.0' fixed the problem.

Answer 2

If you are using any third party frameworks just update them once for Xcode 8.1 and change the Use Legacy Swift Language Version to NO.

Answer 3

If the above suggestions don't work for you try deleting ~Library/Developer/Xcode/DerivedData

Answer 4

You'll need to change the Use Legacy Swift Language Version to NO - this makes sure your project will use swift 3.

If you want to package your project as a POD (for cocoapods) you'll need to add a file named .swift-version (containing 1 single line, "3.0"). This will tell cocoapods to use the swift 3 compiler.

Everything should work after this changes.