By my estimate, it would be a few days work. Even lessminux <minux.ma@gmail.com> once said:
> On Nov 30, 2014 3:10 PM, "Mats Olsson" <plan9.meo@gmail.com> wrote:
> > Just googled and found: https://code.google.com/p/go-wiki/wiki/GoArm
> >
> > So it seems that it's supported.
> go on arm only supports Linux, Freebsd, Netbsd, nacl and Darwin
> (unofficial).
>
> plan 9 is not on the list (yet).
after some simplifying changes I want to make to the
runtime and syscall packages (like removing superfluous
differences between 386 and amd64, etc.).
We're all just waiting for the tree to open up again.
If someone volunteers to run a plan9/arm builder, I'll
do the port and have it in by the 1.5 release. ☺
Cheers,
Anthony