Some applications complains if compiled version of dconf database is
missing ("dconf-WARNING **: unable to open file '/etc/dconf/db/local':
Failed to open file '/etc/dconf/db/local': open() failed: No such file
or directory; expect degraded performance").
There is only one entry in that database, but generate its binary
version anyway to avoid that warning message.
The dconf call is already included in package scripts, now only make
sure the utility is really installed.
QubesOS/qubes-issues#1951
The /etc/dconf/profile/user file in some distributions is part of dconf
package, in some not. There are even cases where it changes between
package versions (Fedora 27 don't have it, but Fedora 28 do).
Also, base Debian Stretch don't have it, but Kali Linux based on it do.
To avoid overly complex dependency handling, create the file dynamically
on package installation if it's missing in that particular case. The
file content is canonical:
user-db:user
system-db:local
FixesQubesOS/qubes-issues#3834
- BACKEND_VMM may not be available as env variable (mock build), provide
it explicitly
- 'user' group may not exists at package build time, set it at package
installation
