[Bug 237551] Re: Custom sources.list cause updater to rewrite sources.list

[KarlGoetz]

I don't have any ubuntu boxes near me anymore, so I can't provide any
further testing on this bug.

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Title:
  Custom sources.list cause updater to rewrite sources.list

Status in “update-manager” package in Ubuntu:
  Incomplete

Bug description:
  Binary package hint: update-manager-core

  Here is some details:
  Our networks proxy is running debcacher. This requires the sources.list to be rewritten something like this:
    deb http://debcache/apt-cacher/archive.ubuntu.com/ubuntu/ gutsy-updates main restricted
    deb-src http://debcache/apt-cacher/archive.ubuntu.com/ubuntu/ gutsy-updates main restricted

  When the updater is used it gives an error about the format of the sources.list file before rewriting to contain <something else>, before starting its updates.
  While this may wind up being the safest way to ensure the new archives are reachable, it does cause a problem for people using proxies/mirrors, as they are unable to cleanly select their preferred update source.

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