Trying to build anything with go 1.6 results in an error.
$ go build hello.go
package main
imports runtime: C source files not allowed when not using cgo or
SWIG: atomic_amd64x.c defs.c float.c heapdump.c lfstack.c malloc.c
mcache.c mcentral.c mem_openbsd.c mfixalloc.c mgc0.c mheap.c msize.c
os_openbsd.c panic.c parfor.c proc.c runtime.c signal.c
signal_amd64x.c signal_unix.c stack.c string.c sys_x86.c
$ go version
go version go1.6.2 openbsd/amd64
Seven flavors of stackoverflow questions provide seven different answers, but
none of them seem particularly relevant.