[skohan]

The Swift core team just added two new members, whose contributions are related to Swift on Windows, and Swift on the server respectively, and have specifically called out supporting Swift in non-Apple domains as a part of the roadmap for Swift 6 (including adding the autodiff work from S4TF into mainline Swift). There is attention being paid to these issues.

[pjmlp]

Thanks for the heads up, I have been looking at that thread, the roadmap still looks quite uncertain, with big questions regarding what Apple is willing to support outside their platforms, tooling (e.g. IDE support), dependencies to WWDC announcements and deliveries.

[skohan]

I have not tried it myself, but I've heard reports that Swift LSP support is going quite well, and it's possible to develop on Ubuntu using VSCode.