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

[Norbert]

I compared sources.list from normal Ubuntu 17.10 installation and from
MATE. They differ by 4 rows:

--- /etc/apt/sources.list
+++ /media/mate1710/724aac41-cc95-44d2-993b-32b544ab9022/etc/apt/sources.list
@@ -1,7 +1,4 @@
-# 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
+#deb cdrom:[Ubuntu 17.10 _Artful Aardvark_ - Release amd64 (20171018)]/ artful main restricted
 
 # See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
 # newer versions of the distribution.


So it seems to be MATE community fault.

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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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