If Swift ever gets good support outside of Apple, I wouldn’t be surprised if JetBrains starts working on their Swift plugin again and releases it for IntelliJ and CLion. But despite this migration, my understanding is that Swift on Linux and the new Foundation (non-Apple standard library) is still lacking.
Maybe it still does, but probably not, because AppCode was sunsetted at the end of 2022 and stopped receiving updates in 2023 (https://blog.jetbrains.com/appcode/2022/12/appcode-2022-3-re...). Which is really unfortunate.
If Swift ever gets good support outside of Apple, I wouldn’t be surprised if JetBrains starts working on their Swift plugin again and releases it for IntelliJ and CLion. But despite this migration, my understanding is that Swift on Linux and the new Foundation (non-Apple standard library) is still lacking.