Thanks so much Ludo! I wasn't sure about whether the license included future versions, will keep an eye on the file headers in the future.  David On Sun, Oct 13, 2019 at 2:59 PM -0700, "Ludovic Courtès" wrote: Hi David, "David Wilson" skribis: > This patch adds the 'playerctl' command line utility for controlling media players that support MPRIS. As this is my first attempt at packaging software for Guix, please let me know if anything can be improved. I've run through most of the steps in the packaging checklist of the manual so I feel pretty confident that it's in good shape. > > Also, this is my first contribution to a GNU project (!!) so please advise if I need to follow any "new contributor" protocol. Looks like you followed the protocol perfectly well! :-) > From 536c7d321ca310762940205358ce26a7141c8e9c Mon Sep 17 00:00:00 2001 > From: David Wilson > Date: Thu, 10 Oct 2019 22:06:43 -0700 > Subject: [PATCH] gnu: Add playerctl. > > * gnu/packages/music.scm (playerctl): New variable. Applied with the minor changes below: the ‘file-name’ issue was reported by ‘guix lint’, and the license is LGPLv3-or-later because source file headers carry the “or any later version” wording. Thank you! Ludo’.