You could say the same about C library dependency hell. I have not used FreeBSD myself, but if I'm remembering correctly, the main reason that dependency hell d

You could say the same about C library dependency hell. I have not used FreeBSD myself, but if I'm remembering correctly, the main reason that dependency hell does not affect the BSDs is that they have their own internal set of C libraries that are developed in tandem. As an OS vendor, FreeBSD could do something like that with Rust. If a Rust application is developed inside the FreeBSD source tree, make it so that it can only use the Rust standard library plus whatever libraries exist inside the FreeBSD source tree.