I'm currently working on packing Lutris for Debian. Lutris is a program which tries to make Gaming on Linux as easy as possible, and is hosted on GitHub under the GPL v3 license (https://github.com/lutris/lutris). Most of the packing is already done (issue 2553), the only major blocker left is the copyright. Lutris uses several icons, which could be not DFSG-compliant, so I wanted to ask for a legal review to clarify what is okay and what needs changes. The icons are located in /share/lutris/icons/hicolor/symbolic/apps. There is a copyright.old file in the directory, which was used until I ported it as good as I could to the /debian/copyright file.
Thanks in advance, Stephan Lachnit