"appstreamcli refresh-cache" does not work without shared-mime-info

[andreymal]

Steps to reproduce:

$ sudo apt-get install appstream
$ sudo appstreamcli refresh-cache --force --verbose
AppStream cache update completed successfully.
# (it works good, because shared-mime-info is installed by default in Ubuntu)

$ sudo apt-get remove shared-mime-info
$ sudo apt-get remove --purge shared-mime-info

$ sudo appstreamcli refresh-cache --force --verbose
** (appstreamcli:21810): DEBUG: 15:55:46.549: Reading: /var/lib/app-info/yaml/mirror.yandex.ru_ubuntu_dists_bionic_main_dep11_Components-amd64.yml.gz
** (appstreamcli:21810): DEBUG: 15:55:46.550: WARNING: Invalid DEP-11 file found. Could not parse YAML: control characters are not allowed
# ... many lines with errors ...
AppStream system cache was updated, but problems were found: Metadata files have errors: [big list of files]

I think this is just a missing dependency, just add shared-mime-info as a dependency for appstream or libappstream4 package

Ubuntu version (maybe cosmic is also affected, I didn't test it):

$ lsb_release -rd
Description: Ubuntu 18.04.1 LTS
Release: 18.04

appstream version:

$ dpkg -s libappstream4 | grep -i version
Version: 0.12.0-3ubuntu1
$ dpkg -s appstream | grep -i version
Version: 0.12.0-3ubuntu1

[Launchpad Janitor (janitor)]

This bug was fixed in the package appstream - 0.12.10-1

---------------
appstream (0.12.10-1) unstable; urgency=medium

  * New upstream version: 0.12.10
  * appstream: Depend on shared-mime-info explicitly (LP: #1813479)
  * Update build dependencies (added libsoup2.4-dev)
  * Update symbols file
  * less-long-token-noise.patch: Make less noise when encountering
    excessively long search tokens (Closes: #942438)
  * Flag d/rules as not requiring root
  * Bump standards version: No changes needed

 -- Matthias Klumpp <email address hidden> Sat, 18 Jan 2020 18:58:00 +0100