Inconsistency between resolved issues/patches and source files.

[William]

Hello.

A few days ago I tried reencoding several video files I have laying
around to save storage, using libsvtav1 through ffmpeg, and then to my
surprise (and frustration) I realized that ffmpeg distributed by
GNU/Guix does not include such encoding library.

I checked the issue tracker and found out issues that indeed commented
on this library missing, strangely enough, an issue with a patch was
marked as solved on 16 February 2024[0], over a month ago, however when
I check the source files I notice that the patch that includes a flag to
enable this library is still not present on the latest build of ffmpeg
yet[1].


Why? How does the merging process work on Guix? Why are issues marked
as solved/done yet patches are still one month due, to submit upstream?
Am I missing something or this is a mistake on the mantainers side?

[0]: https://issues.guix.gnu.org/63095
[1]:
https://git.savannah.gnu.org/cgit/guix.git/tree/gnu/packages/video.scm#n1780