@jperkin we ship gccgo in Solaris because it has a SPARC backend while Google’s go compiler does not, but that shouldn’t matter for illumos (except for the SPARC forks of Tribblix & OpenIndiana).
@alanc yeh that feels like the only reason to use it these days. I've dropped it, which also has the side benefit of reducing the size of my GCC packages from 255MB to 167MB.