I am thinking about testing a possible resurrection of Swift for TensorFlow on Android devices (see Swift for TensorFlow Resurrection: Differentiation running on iOS). I don't have an Android device myself, but I just realized a Chromebook might do the job. @Finagolfin thanks for the comment in Cross-compilation SDKs for Android.
@Gminfly it would be interesting to see S4TF brought to BSD. I recall that at one time, S4TF maintained a macOS High Sierra port of Swift, so it's within the realm of possibility. Furthermore, it would indirectly bring attention to your effort to bring Swift support to that platform.