X-Debbugs-CC: guix-devel@gnu.org

[CC'ing guix-devel@gnu.org because a wider audience seems in order?]

Hi guix,

This patch adds a 'suspect-license' linter detecting some suspicious
values in the license fields of linux modules:

gnu/packages/file-systems.scm:1317:13: zfs@2.1.0: license appears incompatible with the Linux kernel
gnu/packages/linux.scm:1185:13: acpi-call-linux-module@1.2.1: license appears incompatible with the Linux kernel
gnu/packages/linux.scm:8205:15: ttyebus-linux-module@1.5-0.fe4332a: license appears incompatible with the Linux kernel

For zfs, the issue is the CDDL license.  For the others, the issue
is the gpl3+ license.  See the article by the SFLC for why this linter
detets ZFS:

<https://sfconservancy.org/blog/2016/feb/25/zfs-and-linux/#footnote-other-ZFS-copyright-holders>.

I wrote a little about the CDDL-GPL incompatibility issue
(most likely a GPL violation?) at <https://issues.guix.gnu.org/45692#43>.

Greetings,
Maxime.