I don't know about solaris, and I know macos had kernel changes which broke go, but freebsd has a stable kernel interface and unstable userspace. (So does linux, for that matter--ever try running a program linked to a newer version of glibc?)
> So does linux, for that matter--ever try running a program linked to a newer version of glibc?
That doesn't mean the interface isn't stable or at least not less stable than the kernel interface or literally any iterface for something that is still being developed.
It would be nice if glibc would provide an easy way to target the ABI of an older version (which is compatible with all newer versions) but you can do that the manual way by compiling and linking against that old version.
