[Android-tools-devel] Bug#883327: repo: Why is this package in contrib if all of its dependencies are in main?

[UltrasonicMadness]

Package: repo
Severity: minor

Dear Maintainer,

I was interested in looking at the source code for Android Studio and the
developer page on Google on this subject (http://tools.android.com/build)
suggested I use the repo utility to download the sources for convenience's sake.
As I always do with any GNU+Linux distribution, I checked if this tool was
available in the repositories and it was, although it seems to be in the
contrib repository. Since I understand contrib to contain free software which
depends on non-free software, I checked which non-free dependencies this
utility has and it doesn't seem to have any as they're all in main repository,
so why is repo in the contrib repository?

Best regards,
UltrasonicMadness

-- System Information:
Debian Release: 9.2
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.9.0-4-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8), LANGUAGE=en_GB:en (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages repo depends on:
ii  git              1:2.11.0-3+deb9u2
ii  gnupg            2.1.18-8~deb9u1
ii  python           2.7.13-2
pn  python-kerberos  <none>

repo recommends no packages.

repo suggests no packages.