Empty 'required by' message when dependency provided by other package

[diffycat]

E.g. I want to update skype and it has new dependency, lib32-pulseaudio:

==> Software upgrade (new version) :
multilib/skype            4.2.0.13-4 -> 4.3.0.37-1

==> New package :
multilib/lib32-json-c     0.12-1     (required by lib32-libpulse)
multilib/lib32-libasyncns 0.8-6      (required by lib32-libpulse)
multilib/lib32-libcap     2.24-1     (required by lib32-libpulse)
multilib/lib32-libxtst    1.2.2-1    (required by lib32-libpulse)
multilib/lib32-libogg     1.3.1-1    (required by lib32-flac)
multilib/lib32-flac       1.3.0-1    (required by lib32-libsndfile)
multilib/lib32-libvorbis  1.3.4-1    (required by lib32-libsndfile)
multilib/lib32-libsndfile 1.0.25-2   (required by lib32-libpulse)
multilib/lib32-libpulse   5.0-1      (required by -)

The thing is that repository doesn't contains lib32-pulseaudio, but it has lib32-libpulse which provides that package.

[ghost]

Got the same issue this morning :
==> New package :
extra/l-smash 2.3.0-2 (required by -)

Thanks,

Arnaud

[larchunix]

yaourt uses package-query to find reverse dependencies.

$ package-query -S --qdepends -f %n l-smash

$ package-query -S --qdepends -f %n liblsmash.so
x264
vapoursynth-plugin-lsmashsource

IMHO this issue should be fixed in package-query, not in yaourt.

[f2404]

Hi,
Looks like I've encountered this issue with vid.stab today, when updating ffmpeg.
Now, vid.stab is said to be required by ffmpeg; but ffmpeg is not having vid.stab among its dependencies.
How do you think this should be handled by package-query?

$ yaourt -Qi vid.stab
Required By    : ffmpeg

$ yaourt -Qi ffmpeg
Depends On     : alsa-lib  bzip2  fontconfig  fribidi  gnutls  gsm  lame  libass  libbluray  libmodplug  libpulse  libsoxr  libssh  libtheora  libva
                 libvdpau  libwebp  opencore-amr  openjpeg  opus  schroedinger  sdl  speex  v4l-utils  xvidcore  zlib  libvidstab.so=1.1-64
                 libvorbis.so=0-64  libvorbisenc.so=2-64  libvpx.so=2-64  libx264.so=148-64  libx265.so=68-64

[f2404]

Okay, it looks like ffmpeg is requiring libvidstab.so=1.1-64, and vid.stab is providing it.
So, probably package-query should improve handling of the 'provided' items as requirements...

$ yaourt -Qi vid.stab
Name           : vid.stab
Provides       : libvidstab.so=1.1-64

[f2404]

Actually, I think this can be resolved in yaourt. Please check my patch.

[f2404]

But, the package (vid.stab in my case) is still shown as explicitly installed, not as a dependency...