Package: debian-cdd
Severity: normal
User: de...@kali.org
Usertags: origin-kali

Dear Maintainer,

Lately I tried to preseed a question of the type 'error', and it wasn't
really straightforward.

Such a question can be seen in the package encfs, at:
https://sources.debian.org/src/encfs/1.9.5-1/debian/encfs.templates

The template looks like that:

  Template: encfs/security-information
  Type: error
  _Description: Encfs security information
   According to a security audit by Taylor Hornby (Defuse Security), the current
   [...]

In effect, when the package encfs is installed by the Debian installer,
it displays an error message. It's not really a question, it's simply an
error message.

I tried to use preseeding to prevent the Debian installer from showing
this message. The tentative preseed line that I applied was:

  encfs encfs/security-information seen true

However, this leads to a build failure in live-build-config:

  $ ./build.sh --verbose --installer --variant netinst
  [...]
  2022-08-04 10:05:37,846 DEBUG Checking configuration...
  error: Cannot find a question for encfs/security-information
  2022-08-04 10:05:38,016 ERROR preseed file invalid:
    <<LBDIR>>/simple-cdd/profiles/default.preseed

Fortunately, there's a workaround! We have to apply this preseeding instead:

  encfs encfs/security-information boolean true
  encfs encfs/security-information seen true

It seems like the first line is enough to trick simple-cdd/debconf into
accepting the second line. This workaround has been use to build the
Kali Linux ISOs:
https://gitlab.com/kalilinux/build-scripts/live-build-config/-/commit/d9040785

Note that the error message above seems to come from debconf, and I
wonder if it can be solved by adding 'error' to the list of known types
here: https://sources.debian.org/src/debconf/1.5.79/debconf-set-selections/#L154

To finish this report, a few URLs showing that other people struggle
with this issue:
- https://bugs.launchpad.net/ubuntu/+source/encfs/+bug/1672827
- https://askubuntu.com/q/1401467/424636

Thanks,

Arnaud

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