Bug#156388: apt shouldn't fail when only one of a list of sources fails to be reachable

["John Galt" <galt@locutus.isu.edu>]

Package: apt
Version: 0.5.4
Severity: wishlist

When using apt with a [relatively] large sources.list and a command like
apt-get update && apt-get upgrade, a single source failure fails the whole
cascade.  There should be a "non-fatal" flag for sources.list signifying
that the particular source isn't necessary to the continued health of the
job.  This problem gets exacerbated by automated jobs such as cron-apt and
flaky sources.

-- System Information:
Debian Release: testing/unstable
Architecture: i386
Kernel: Linux locutus 2.4.18 #3 Mon Apr 22 05:34:49 MDT 2002 i586
Locale: LANG=C, LC_CTYPE=C

Versions of packages apt depends on:
ii  libc6                        2.2.5-13    GNU C Library: Shared libraries an
ii  libstdc++2.10-glibc2.2       1:2.95.4-11 The GNU stdc++ library

-- no debconf information