[Bug 1697120] Re: artful's apt-file and aptitude complains about Ubuntu sources.list

[Norbert]

@Julian Andres Klode (juliank)

It was clean fresh installation from official fresh ISO. 
Here is sources.list. I did not touch it.

mate1710 at mate1710:~$ cat /etc/apt/sources.list
# deb cdrom:[Ubuntu-MATE 17.10 _Artful Aardvark_ - Release i386 (20171018)]/ artful main multiverse restricted universe
deb http://archive.ubuntu.com/ubuntu/ artful main restricted universe multiverse
deb http://security.ubuntu.com/ubuntu/ artful-security main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu/ artful-updates main restricted universe multiverse

# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
# newer versions of the distribution.
deb http://ru.archive.ubuntu.com/ubuntu/ artful main restricted
# deb-src http://ru.archive.ubuntu.com/ubuntu/ artful main restricted

## Major bug fix updates produced after the final release of the
## distribution.
deb http://ru.archive.ubuntu.com/ubuntu/ artful-updates main restricted
# deb-src http://ru.archive.ubuntu.com/ubuntu/ artful-updates main restricted

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team. Also, please note that software in universe WILL NOT receive any
## review or updates from the Ubuntu security team.
deb http://ru.archive.ubuntu.com/ubuntu/ artful universe
# deb-src http://ru.archive.ubuntu.com/ubuntu/ artful universe
deb http://ru.archive.ubuntu.com/ubuntu/ artful-updates universe
# deb-src http://ru.archive.ubuntu.com/ubuntu/ artful-updates universe

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu 
## team, and may not be under a free licence. Please satisfy yourself as to 
## your rights to use the software. Also, please note that software in 
## multiverse WILL NOT receive any review or updates from the Ubuntu
## security team.
deb http://ru.archive.ubuntu.com/ubuntu/ artful multiverse
# deb-src http://ru.archive.ubuntu.com/ubuntu/ artful multiverse
deb http://ru.archive.ubuntu.com/ubuntu/ artful-updates multiverse
# deb-src http://ru.archive.ubuntu.com/ubuntu/ artful-updates multiverse

## N.B. software from this repository may not have been tested as
## extensively as that contained in the main release, although it includes
## newer versions of some applications which may provide useful features.
## Also, please note that software in backports WILL NOT receive any review
## or updates from the Ubuntu security team.
deb http://ru.archive.ubuntu.com/ubuntu/ artful-backports main restricted universe multiverse
# deb-src http://ru.archive.ubuntu.com/ubuntu/ artful-backports main restricted universe multiverse

## Uncomment the following two lines to add software from Canonical's
## 'partner' repository.
## This software is not part of Ubuntu, but is offered by Canonical and the
## respective vendors as a service to Ubuntu users.
# deb http://archive.canonical.com/ubuntu artful partner
# deb-src http://archive.canonical.com/ubuntu artful partner

deb http://security.ubuntu.com/ubuntu artful-security main restricted
# deb-src http://security.ubuntu.com/ubuntu artful-security main restricted
deb http://security.ubuntu.com/ubuntu artful-security universe
# deb-src http://security.ubuntu.com/ubuntu artful-security universe
deb http://security.ubuntu.com/ubuntu artful-security multiverse
# deb-src http://security.ubuntu.com/ubuntu artful-security multiverse


It's not my fault. Should we inform Ubuntu MATE developers?

-- 
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Foundations Bugs, which is subscribed to apt in Ubuntu.
https://bugs.launchpad.net/bugs/1697120

Title:
  artful's apt-file and aptitude complains about Ubuntu sources.list

Status in ubuntu-mate:
  New
Status in apt package in Ubuntu:
  Fix Released
Status in apt source package in Zesty:
  Fix Committed
Status in apt package in Debian:
  Fix Released

Bug description:
  [Impact]
  apt-file is now difficult to use with about a dozen warnings like this:

  W: Target Contents-deb-legacy (Contents-amd64) is configured multiple
  times in /etc/apt/sources.list:6 and /etc/apt/sources.list:17

  For reference, this is line 6:
  deb http://us.archive.ubuntu.com/ubuntu/ artful main restricted

  And this is line 17:
  deb http://us.archive.ubuntu.com/ubuntu/ artful universe

  This is how Ubuntu's default sources.list has been structured since
  the beginning? (or at least more than a decade).

  What I expect
  -------------
  The warning isn't specific enough. Lines 6 and 17 are not actually duplicates. The warning could be removed or fixed so that it doesn't complain about non-duplicates.

  Or the warning could be disabled on Ubuntu.

  See also
  --------
  LP: #1579372

  [Test case]
  Install apt-file and update, make sure that the warnings are gone.

  [Regression potential]
  Warnings about duplicate index targets containing "legacy" in their configured name are not shown anymore, thus it's harder to "fix" servers. But apart from that, which was the goal, I don't see any.

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