amyagkov@mrtam:~/repo/gmr_run$ GOOS=plan9 GOARCH=arm GOEXPERIM='' GOARM=7 go build hw.go
# syscall
../go/src/pkg/syscall/syscall_plan9.go:27: undefined: EINTR
../go/src/pkg/syscall/syscall_plan9.go:27: undefined: EMFILE
../go/src/pkg/syscall/syscall_plan9.go:31: undefined: EBUSY
../go/src/pkg/syscall/syscall_plan9.go:31: undefined: ETIMEDOUT
../go/src/pkg/syscall/syscall_plan9.go:321: undefined: nanotime