Possibility to define golang version for build machine

We are having difficulties with one build configuration and would like to specify version of go lang to be used in particular build configuration. I have noticed it is possible for other languages in machine section of the config, but could not find anything for go.

Is there any way to use specific golang version for the build machine?


This our biggest hindrance as well.
@tosmotri as a workaround you can do like we do see https://github.com/raintank/raintank-metric/blob/master/circle.yml
I would be nice for the golang version to be configurable, and ideally also for a recent golang from master to be available, since the golang team always asks to test the latest golang runtime before they do a new version release.