[Bug 773823] Re: fails to upgrade with non-official repositories

[Barry Warsaw]

*** This bug is a duplicate of bug 289952 ***
    https://bugs.launchpad.net/bugs/289952

Addressing what I think is your original request, if not the bug you
submitted here, why not use a caching proxy instead of a local mirror?
you could add something like this to /etc/apt/apt.conf.d/02proxy:

Acquire::http { Proxy "http://apt.example.com:3142"; };

Something like apt-cacher-ng might do the trick for you.

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https://bugs.launchpad.net/bugs/773823

Title:
  fails to upgrade with non-official repositories

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

Bug description:
  Binary package hint: update-manager

  I have my /etc/apt/sources.list point to my approx mirror, so I don't
  have to download copies of every file for every computer I upgrade.
  update-manager considers all these entries as 3rd party sources and
  disables them all, and then complains it can't find ubuntu-minimal.

  Sometimes it will ask me if I want to rewrite maverick to natty - this
  always use to happen prior to 11.04, but now it is very inconsistent.
  I can't see how to activate that part of the code. When it does ask
  me, everything works fine.

  Brian May

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