[Bug 1512347] Re: invalid sources.list generated from reading apt-setup/local0/repository

[Paul Weaver]

I can confirm this bug, which means the preseed file at 
https://help.ubuntu.com/16.04/installation-guide/example-preseed.txt

# Additional repositories, local[0-9] available
#d-i apt-setup/local0/repository string \
#       http://local.server/ubuntu xenial main
#d-i apt-setup/local0/comment string local server
# Enable deb-src lines
#d-i apt-setup/local0/source boolean true
# URL to the public key of the local repository; you must provide a key or
# apt will complain about the unauthenticated repository and so the
# sources.list line will be left commented out
#d-i apt-setup/local0/key string http://local.server/key

Doesn't work.

If you change the line to 
d-i apt-setup/local0/repository string deb http://local.server....

The install works fine

I don't think that library.sh is necessarily the cause, as the above
preseed works fine in 14.04 with the same code and behaviour from
library.sh (it creates a sources.list file with a missing deb on the
front). I don't understand

Under 1404 the following happens

Feb 29 14:02:41 base-installer: E: Type 'http://myserver/debs' is not known on line 4 in source list /etc/apt/sources.list
Feb 29 14:02:41 base-installer: E: The list of sources could not be read.
Feb 29 14:02:41 base-installer: warning: apt update failed: 100

However base-installer progresses anyway.

The function in library.sh that deals with local0 (and not local1-9)
seems to be a bit of a hack though, but for anyone running into the same
problem prepending deb to your preseed file should do the trick.

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https://bugs.launchpad.net/bugs/1512347

Title:
  invalid sources.list generated from reading apt-
  setup/local0/repository

Status in base-installer package in Ubuntu:
  Confirmed

Bug description:
  hi,
  it looks like configure_apt from library.sh will add the contents of apt-setup/local0/repository verbatim to the sources file. This works only if the repository is prefixed with "deb ", which for apt-setup is optional. Not using a repository prefixed with "deb" will result in an invalid sources.list file. See also https://phabricator.wikimedia.org/T94177 and https://gerrit.wikimedia.org/r/250380

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