[Bug 1554023] Re: Perform an apt update if there is no appstream available

[Matthias Klumpp]

Also check for the component type then (should be of type DESKTOP_APP)... It's a bit dirty though, because people will maybe not want metadata but still want to use GS...
So probably checking if /var/lib/app-info/yaml contains files and /etc/apt/apt.conf.d/50appstream is present will be the better approach.

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Title:
  Perform an apt update if there is no appstream available

Status in gnome-software package in Ubuntu:
  In Progress
Status in livecd-rootfs package in Ubuntu:
  Fix Released

Bug description:
  appstream's IndexTarget doesn't take effect until the first 'apt
  update' after it is installed. This means you get no installed
  software after first installing g-s until you update again.

  I tried to ask apt's developers if they could see a way to fix this
  but on first reply they deny there is a problem at all.

    http://comments.gmane.org/gmane.linux.debian.apt.devel/30085

  So I think we have to workaround the problem somehow. First strawman:
  have gnome-software do an 'update' on first launch if it finds no
  appstream metadata and /etc/apt/apt.conf.d/50appstream is installed.

  We also need to fix this in livecd-rootfs for new installs. I guess
  there we can add a hook to do an update as part of the build.

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