I used to work at an organization that shipped a Go binary that supported Linux 2.4 kernels, which afaik Golang never supported. There was nothing in the toolch

I used to work at an organization that shipped a Go binary that supported Linux 2.4 kernels, which afaik Golang never supported. There was nothing in the toolchain stopping us from building on an old kernel, but we were on our own for testing and worked around some libc issues in the runtime and stdlib if I recall correctly. I imagine there's some enterprise customer somewhere on an old version of Windows that will throw money at vendors to make a similar effort.