[PATCH] profiles/targets/desktop: drop USE=xvid from make.defaults

xvid used to be pretty popular in the early 2000s which made some
sense to have as default, but nowadays it is nothing but a relic
and users that really want it should opt-in manually.

Also, on media-video/ffmpeg, last I know of USE=xvid should not be
needed for xvid playback and that USE is rather only for encoding which
even less people should need as they'll use more modern codecs.
This means "most" video players should still be able to play these
likely very old files without issues.

One negative impact this change will have is with media-gfx/blender
which seems to need a list of encoders always enabled incl. xvid
(unsure if it really still needs xvid in 2026 though).

  ffmpeg? ( media-video/ffmpeg:=[encode(+),lame(-),jpeg2k?,opus,
              theora,vorbis,vpx,x264,xvid] )

..most of which are already off-by-default, but users will need to
update their package.use to also add xvid -- may cause some confusion.

On a related note, only a handful of package even (still) have the USE,
which also makes it questionable set globally rather than per-package if
needed:

 * media-libs/avidemux-plugins
 * media-tv/mythtv
 * media-video/ffmpeg
 * media-video/ffmpeg-compat
 * media-video/gpac
 * media-video/mplayer

media-libs/xvid also hasn't received a release in 6 years, could
potentially become a last-rite candidate if it breaks. No longer
pulling that ancient package by default for ffmpeg users is the
primary benefit here.

Signed-off-by: Ionen Wolkens <[email protected]>
---
 profiles/targets/desktop/make.defaults | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/profiles/targets/desktop/make.defaults b/profiles/targets/desktop/make.defaults
index d27a8a2d324f..1c114761cd2a 100644
--- a/profiles/targets/desktop/make.defaults
+++ b/profiles/targets/desktop/make.defaults
@@ -1,4 +1,4 @@
-# Copyright 1999-2025 Gentoo Authors
+# Copyright 1999-2026 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
-USE="a52 aac acpi alsa avif bluetooth branding cairo cdda cdr cups dbus dri dts dvd dvdr elogind encode exif flac gif gpm gtk gui icu jpeg jpegxl lcms libnotify mad mng mp3 mp4 mpeg ogg opengl pipewire pango pdf png policykit ppds pulseaudio qml qt6 screencast sdl sound spell startup-notification svg tiff truetype vorbis udev udisks unicode upower usb vulkan wayland webp wxwidgets X xcb xft x264 xml xv xvid"
+USE="a52 aac acpi alsa avif bluetooth branding cairo cdda cdr cups dbus dri dts dvd dvdr elogind encode exif flac gif gpm gtk gui icu jpeg jpegxl lcms libnotify mad mng mp3 mp4 mpeg ogg opengl pipewire pango pdf png policykit ppds pulseaudio qml qt6 screencast sdl sound spell startup-notification svg tiff truetype vorbis udev udisks unicode upower usb vulkan wayland webp wxwidgets X xcb xft x264 xml xv"
-- 
2.53.0