Years back, I tweaked the Plan 9 kernel source so it could compile with Go's C toolchain. After a day or two it was booting, but we decided not to use it... I think the end conclusion was that the Go team was (reasonably) only interested in maintaining the compilers for building Go, and that they could at any time make changes that would break our builds.
Even the logo has some resmblance
Both made by Renée French, wife of Rob Pike!
Who were, I believe, brought together by Penn Jillette.
In the photo with the article, Rob a) has hair and b) dresses just like Penn. Wild times in New Jersey…
I think Tom Duff of Duff's device fame is also there, 3rd from left at the back.