[go-nuts] A shared folders and compiling for different platforms

I'm in early days developing with Go. My setup: I write code on OSX and
keep a development VM in Vagrant. I've always used the shared folders
feature in Vagrant to keep the code synced between host and guest.

The problem comes if I try to compile on either machine: It copies over the
compiled file that is in the shared folder, and the other machine can't
execute that binary because it's a different architecture. Compile in one,
it overwrites the binary in the other.

Any insights on how to handle this? As far as I know NFS doesn't allow for
excluding files -- it syncs everything.

Thanks.