[Bug 1754075] Re: apt-setup uses apt-key but probably should not anymore

[Lars Kollstedt]

Hi again,

switching to installation shell, and doing a

chroot /target
apt install gnupg2
exit
exit

allows me to complete the installation, when continuing with the
installation step preparing installation sources after this.

The /var/log/syslog from the installation system shows the following
messages before doing this:

Apr  5 19:09:46 main-menu[2796]: (process:23507): 2018-04-05 19:09:37 URL:http://software.ubuntu.man-da.de/software/key.gpg [3121/3121] -> "/target/tmp/_fetch-url_key0.pub.24311" [1]
Apr  5 19:09:46 main-menu[2796]: (process:23507): E: gnupg, gnupg2 and gnupg1 do not seem to be installed, but one of them is required for this operation

A few lines above there is also the message:
Apr  5 19:09:38 apt-setup: warning: /usr/lib/apt-setup/generators/60local returned error code 255; discarding output

Kind regards,
   Lars

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https://bugs.launchpad.net/bugs/1754075

Title:
  apt-setup uses apt-key but probably should not anymore

Status in apt-setup package in Ubuntu:
  Confirmed
Status in gnupg package in Ubuntu:
  New
Status in gnupg2 package in Ubuntu:
  New

Bug description:
  In di if the kernel is in a private PPA we seed di using

  d-i apt-setup/local0/key string
  http://keyserver.ubuntu.com:11371/pks/lookup?op=get&search=<key>

  this used to work in xenial, but in bionic this fails and therefore
  apt update fails in base-installer. May be because add-apt-key is not
  installed.

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