[Docker-maint] Bug#841385: golang-go does not participate in alternatives, gccgo-6 stomps /usr/bin/go

[Dustin L. Howett]

Package: golang-go
Version: 2:1.7~1
Severity: important

Installing gccgo-6=6.2.0-6 after golang-go=2:1.7~1 triggers an
update-alternatives that replaces /usr/bin/go with a symbolic link to
/etc/alternatives/go.

It looks like the fix for #840190 did not coordinate with an update to
golang-go that integrates with the alternatives system.

-- System Information:
Debian Release: stretch/sid
  APT prefers oldstable-updates
  APT policy: (500, 'oldstable-updates'), (500, 'unstable'), (500, 'testing'), (500, 'oldstable'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.7.0-1-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages golang-go depends on:
ii  golang-1.7-go  1.7.3-1
ii  golang-src     2:1.7~1

golang-go recommends no packages.

golang-go suggests no packages.

-- no debconf information