AppStream Re: Depends/Recommends from libraries
appstream itself is installed on ~60% of sid/stretch desktops [0], but
isenkram on only ~5% (and most of those are the -cli version).
When beignet-opencl-icd added AppStream metadata (black line in [1]),
there was no noticeable increase in its installs. As it's for popular
hardware (~33% of systems [2]) but a sufficiently behind-the-scenes
feature that few users manually install it, this is a fairly sensitive
test: <10% of new (including newly upgraded) sid/stretch desktop
installations with the hardware installed it.
Hence, either most users don't see AppStream suggestions, or most users
don't want GPU compute when offered the option. (beignet-opencl-icd's
AppStream summary/description are "OpenCL (GPU compute) driver for Intel
GPUs"/"This allows using Intel integrated GPUs for general computation,
speeding up some applications." At least libreoffice-calc and probably
ffmpeg can take advantage of it, but it's very possible that typical use
of these is either on too little data to notice the difference, or has a
better option (libva/libvdpau).)
[0]
https://qa.debian.org/popcon-graph.php?packages=libvpx4+libllvm3.9+appstream+libappstream4+beignet-opencl-icd&show_installed=on&want_legend=on&want_ticks=on&from_date=2016-01-01&to_date=&hlght_date=2017-01-18&date_fmt=%25Y-%25m&beenhere=1
libvpx4 (video decoding, dependency of firefox and chromium) and
libllvm3.9 (compiler library, dependency of libgl1-mesa-dri) were chosen
as approximations of "all stretch/sid desktops", as they have changed
soname since jessie.
[1]
https://qa.debian.org/popcon-graph.php?packages=beignet-opencl-icd+mesa-opencl-icd+pocl-opencl-icd&show_installed=on&want_legend=on&want_ticks=on&from_date=2016-01-01&to_date=&hlght_date=2017-01-18&date_fmt=%25Y-%25m&beenhere=1
[2] from recent bug reports:
http://www.mail-archive.com/search?a=1&l=debian-bugs-dist%40lists.debian.org&haswords=VGA+compatible+controller+[0300]&x=16&y=26&from=&subject=&datewithin=1y&date=2017-01-01¬words=&o=newest
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