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Bug#678227: marked as done ([apt] Indices updates download descriptions in all languages by default)

Your message dated Tue, 11 Sep 2012 15:32:49 +0000
with message-id <E1TBSSH-0004PS-Ri@franck.debian.org>
and subject line Bug#678227: fixed in apt 0.9.7.5
has caused the Debian Bug report #678227,
regarding [apt] Indices updates download descriptions in all languages by default
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.

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-- 
678227: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=678227
Debian Bug Tracking System
Contact owner@bugs.debian.org with problems
--- Begin Message --- 
Package: apt
Version: 0.9.6
Severity: normal
With the modularization of package descriptions in distinct index files, there is now one file for each language which has some descriptions. By default, APT fetches all of these. Since the protocol is not optimized for this, indices update are now pretty slow, even when nothing changed.
The Acquire::Languages configuration item controls which languages are downloaded. By default, "environment" and English are (explicitly) downloaded. For example, in a French system, Acquire::Languages would normally request (explicitly) French and English description files to be downloaded. But as explained in apt.conf(5), files for more languages may be downloaded:
Note: To prevent problems resulting from APT being executed in different environments (e.g. by different users or by other programs) all Translation files which are found in /var/lib/apt/lists/ will be added to the end of the list (after an implicit "none").
This is hacky, but not a particularly bad hack in practice, since most systems do not use more than 2 languages.
But since /var/lib/apt/lists/ initially contains the files for all languages, files for all languages are downloaded/updated, by default. This happens even if a single language is hardcoded as Acquire::Language's value.
The workaround is to remove unwanted descriptions files from /var/lib/apt/lists/: 

# rm /var/lib/apt/lists/*_Translation-*
I imagine the fix is to only have files for the requested languages in /var/lib/apt/lists/ after installation.
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=641967 has information about a similar bug where description files would slow indices updates.

--- End Message ---
--- Begin Message --- 
Source: apt
Source-Version: 0.9.7.5

We believe that the bug you reported is fixed in the latest version of
apt, which is due to be installed in the Debian FTP archive.

A summary of the changes between this version and the previous one is
attached.

Thank you for reporting the bug, which will now be closed.  If you
have further comments please address them to 678227@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.

Debian distribution maintenance software
pp.
Michael Vogt <mvo@debian.org> (supplier of updated apt package)

(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing ftpmaster@debian.org)


-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Format: 1.8
Date: Tue, 11 Sep 2012 15:56:44 +0200
Source: apt
Binary: apt libapt-pkg4.12 libapt-inst1.5 apt-doc libapt-pkg-dev libapt-pkg-doc apt-utils apt-transport-https
Architecture: source all amd64
Version: 0.9.7.5
Distribution: unstable
Urgency: low
Maintainer: APT Development Team <deity@lists.debian.org>
Changed-By: Michael Vogt <mvo@debian.org>
Description: 
 apt        - commandline package manager
 apt-doc    - documentation for APT
 apt-transport-https - https download transport for APT
 apt-utils  - package managment related utility programs
 libapt-inst1.5 - deb package format runtime library
 libapt-pkg-dev - development files for APT's libapt-pkg and libapt-inst
 libapt-pkg-doc - documentation for APT development
 libapt-pkg4.12 - package managment runtime library
Closes: 670900 678227 684435 685192 685989 686346 686975
Changes: 
 apt (0.9.7.5) unstable; urgency=low
 .
   [ Manpages translation updates ]
   * Japanese (KURASAWA Nozomu) (Closes: #684435)
   * Portuguese (Américo Monteiro) (Closes: #686975)
 .
   [ David Kalnischkies ]
   * handle packages without a mandatory architecture (debian-policy §5.3)
     by introducing a pseudo-architecture 'none' so that the small group of
     users with these packages can get right of them without introducing too
     much hassle for other users (Closes: #686346)
   * apt-pkg/cdrom.cc:
     - copy only configured translation files from a CD-ROM and not all
       available translation files preventing new installs with d-i from
       being initialized with all translations (Closes: #678227)
     - handle Components in the reduction for the source.list as multi-arch CDs
       otherwise create duplicated source entries (e.g. "wheezy main main")
   * apt-pkg/packagemanager.cc:
     - unpack versions only in case a different version from the package
       is currently in unpack state to recover from broken system states
       (like different file in M-A:same package and other dpkg errors)
       and avoid re-unpack otherwise (Closes: #670900)
   * debian/control:
     - let libapt-pkg break apt < 0.9.4 to ensure that the installed http-
       method supports the new redirection-style, thanks to Raphael Geissert
       for reporting & testing (Closes: #685192)
   * doc/apt_preferences.5.xml:
     - use the correct interval (x <= P < y) for pin value documentation as
       these are the intervals used by the code (Closes: #685989)
   * apt-pkg/indexcopy.cc:
     - do not create duplicated flat-archive CD-ROM sources for foreign
       architectures on multi-arch CD-ROMs
     - do not warn about files which have a record in the Release file, but
       are not present on the CD to mirror the behavior of the other methods
       and to allow uncompressed indexes to be dropped without scaring users
   * apt-pkg/pkgcachegen.cc:
     - do not create 'native' (or now 'none') package structures as a side
       effect of description translation parsing as it pollutes the cache
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