Languages that are good at arbitrarily composing many modules into a stand-alone executable are becoming more popular. Rust is my favorite; one can even package wrappers over C or C++ libraries in a way that fits seamlessly into the cargo build process. Go is good here as well, as long as you stick to pure Go. As soon as you introduce cgo, that adds a hurdle for any user of the library, particularly on Windows. Zig looks like it's on the right track, though we still have to wait and see what the package manager will look like. And I'm sure there are others.

We also don't know yet if any of these languages will develop strong ecosystems for rapid GUI development.

And of course, Lazarus (for Free Pascal) is still a thing, though it doesn't have hype, or more importantly, large mindshare.