gccgo-6 software package provides GNU Go compiler, you can install in your Debian 9 (Stretch) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install gccgo-6
gccgo-6 is installed in your system.
Make ensure the gccgo-6 package were installed using the commands given below,
$ sudo dpkg-query -l | grep gccgo-6 *
You will get with gccgo-6 package name, version, architecture and description in a table
| Distro | Debian 9 stretch |
| Section | Development |
| Package | gccgo-6 |
| Version | 6.2.0-10 |
| Description | GNU Go compiler |
| Sub Section | devel |