Your message dated Tue, 13 Mar 2018 08:58:40 +0100
with message-id <20180313075840.GA8624@crossbow>
and subject line Re: Bug#840119: lowering no-pdiff prio to 99 doesn't help
has caused the Debian Bug report #840119,
regarding Cannot disable pdiffs
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.

(NB: If you are a system administrator and have no idea what this
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-- 
840119: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=840119
Debian Bug Tracking System
Contact ow...@bugs.debian.org with problems
--- Begin Message ---
Package: apt
Version: 1.3
Severity: normal

Recently (sorry, I don’t know with which version precisely), I have
noticed that apt acquires pdiffs when running “sudo apt-get update”
(yes, I have updated my aliases to prefer apt over apt-get for the
future).

Since pdiffs make updates way slower in my setup, I have pdiffs disabled
on all my machines using:

$ cat /etc/apt/apt.conf.d/06disable-pdiffs 
Acquire::Pdiffs "no";

However, that does not seem to be enough. I’ve tried explicitly
disabling all options containing “pdiff”, but disabling the
Acquire::IndexTargets::*::PDiffs options doesn’t seem to work at all:

$ cat /etc/apt/apt.conf.d/06disable-pdiffs 
Acquire::Pdiffs "no";
Acquire::IndexTargets::deb::Contents-deb::PDiffs "false";
Acquire::IndexTargets::deb::Contents-udeb::PDiffs "false";
Acquire::IndexTargets::deb-src::Contents-dsc::PDiffs "false";

$ apt-config dump|grep -i pdiff           
Acquire::IndexTargets::deb::Contents-deb::PDiffs "true";
Acquire::IndexTargets::deb::Contents-udeb::PDiffs "true";
Acquire::IndexTargets::deb-src::Contents-dsc::PDiffs "true";
Acquire::Pdiffs "no";

Am I running into a bug, or am I doing something wrong? If the latter,
what is the correct way to disable pdiffs once and for all? Thanks.

-- Package-specific info:

-- apt-config dump --

APT "";
APT::Architecture "amd64";
APT::Build-Essential "";
APT::Build-Essential:: "build-essential";
APT::Install-Recommends "false";
APT::Install-Suggests "false";
APT::Sandbox "";
APT::Sandbox::User "_apt";
APT::NeverAutoRemove "";
APT::NeverAutoRemove:: "^firmware-linux.*";
APT::NeverAutoRemove:: "^linux-firmware$";
APT::NeverAutoRemove:: "^linux-image-4\.3\.0-1-amd64$";
APT::NeverAutoRemove:: "^linux-image-4\.6\.0-1-amd64$";
APT::NeverAutoRemove:: "^linux-headers-4\.3\.0-1-amd64$";
APT::NeverAutoRemove:: "^linux-headers-4\.6\.0-1-amd64$";
APT::NeverAutoRemove:: "^linux-image-extra-4\.3\.0-1-amd64$";
APT::NeverAutoRemove:: "^linux-image-extra-4\.6\.0-1-amd64$";
APT::NeverAutoRemove:: "^linux-signed-image-4\.3\.0-1-amd64$";
APT::NeverAutoRemove:: "^linux-signed-image-4\.6\.0-1-amd64$";
APT::NeverAutoRemove:: "^kfreebsd-image-4\.3\.0-1-amd64$";
APT::NeverAutoRemove:: "^kfreebsd-image-4\.6\.0-1-amd64$";
APT::NeverAutoRemove:: "^kfreebsd-headers-4\.3\.0-1-amd64$";
APT::NeverAutoRemove:: "^kfreebsd-headers-4\.6\.0-1-amd64$";
APT::NeverAutoRemove:: "^gnumach-image-4\.3\.0-1-amd64$";
APT::NeverAutoRemove:: "^gnumach-image-4\.6\.0-1-amd64$";
APT::NeverAutoRemove:: "^.*-modules-4\.3\.0-1-amd64$";
APT::NeverAutoRemove:: "^.*-modules-4\.6\.0-1-amd64$";
APT::NeverAutoRemove:: "^.*-kernel-4\.3\.0-1-amd64$";
APT::NeverAutoRemove:: "^.*-kernel-4\.6\.0-1-amd64$";
APT::NeverAutoRemove:: "^linux-backports-modules-.*-4\.3\.0-1-amd64$";
APT::NeverAutoRemove:: "^linux-backports-modules-.*-4\.6\.0-1-amd64$";
APT::NeverAutoRemove:: "^linux-tools-4\.3\.0-1-amd64$";
APT::NeverAutoRemove:: "^linux-tools-4\.6\.0-1-amd64$";
APT::VersionedKernelPackages "";
APT::VersionedKernelPackages:: "linux-image";
APT::VersionedKernelPackages:: "linux-headers";
APT::VersionedKernelPackages:: "linux-image-extra";
APT::VersionedKernelPackages:: "linux-signed-image";
APT::VersionedKernelPackages:: "kfreebsd-image";
APT::VersionedKernelPackages:: "kfreebsd-headers";
APT::VersionedKernelPackages:: "gnumach-image";
APT::VersionedKernelPackages:: ".*-modules";
APT::VersionedKernelPackages:: ".*-kernel";
APT::VersionedKernelPackages:: "linux-backports-modules-.*";
APT::VersionedKernelPackages:: "linux-tools";
APT::Never-MarkAuto-Sections "";
APT::Never-MarkAuto-Sections:: "metapackages";
APT::Never-MarkAuto-Sections:: "contrib/metapackages";
APT::Never-MarkAuto-Sections:: "non-free/metapackages";
APT::Never-MarkAuto-Sections:: "restricted/metapackages";
APT::Never-MarkAuto-Sections:: "universe/metapackages";
APT::Never-MarkAuto-Sections:: "multiverse/metapackages";
APT::Move-Autobit-Sections "";
APT::Move-Autobit-Sections:: "oldlibs";
APT::Move-Autobit-Sections:: "contrib/oldlibs";
APT::Move-Autobit-Sections:: "non-free/oldlibs";
APT::Move-Autobit-Sections:: "restricted/oldlibs";
APT::Move-Autobit-Sections:: "universe/oldlibs";
APT::Move-Autobit-Sections:: "multiverse/oldlibs";
APT::Default-Release "testing";
APT::Compressor "";
APT::Compressor::. "";
APT::Compressor::.::Name ".";
APT::Compressor::.::Extension "";
APT::Compressor::.::Binary "";
APT::Compressor::.::Cost "0";
APT::Compressor::lz4 "";
APT::Compressor::lz4::Name "lz4";
APT::Compressor::lz4::Extension ".lz4";
APT::Compressor::lz4::Binary "false";
APT::Compressor::lz4::Cost "400";
APT::Compressor::gzip "";
APT::Compressor::gzip::Name "gzip";
APT::Compressor::gzip::Extension ".gz";
APT::Compressor::gzip::Binary "gzip";
APT::Compressor::gzip::Cost "100";
APT::Compressor::gzip::CompressArg "";
APT::Compressor::gzip::CompressArg:: "-6n";
APT::Compressor::gzip::UncompressArg "";
APT::Compressor::gzip::UncompressArg:: "-d";
APT::Compressor::xz "";
APT::Compressor::xz::Name "xz";
APT::Compressor::xz::Extension ".xz";
APT::Compressor::xz::Binary "xz";
APT::Compressor::xz::Cost "200";
APT::Compressor::xz::CompressArg "";
APT::Compressor::xz::CompressArg:: "-6";
APT::Compressor::xz::UncompressArg "";
APT::Compressor::xz::UncompressArg:: "-d";
APT::Compressor::bzip2 "";
APT::Compressor::bzip2::Name "bzip2";
APT::Compressor::bzip2::Extension ".bz2";
APT::Compressor::bzip2::Binary "bzip2";
APT::Compressor::bzip2::Cost "300";
APT::Compressor::bzip2::CompressArg "";
APT::Compressor::bzip2::CompressArg:: "-6";
APT::Compressor::bzip2::UncompressArg "";
APT::Compressor::bzip2::UncompressArg:: "-d";
APT::Compressor::lzma "";
APT::Compressor::lzma::Name "lzma";
APT::Compressor::lzma::Extension ".lzma";
APT::Compressor::lzma::Binary "xz";
APT::Compressor::lzma::Cost "400";
APT::Compressor::lzma::CompressArg "";
APT::Compressor::lzma::CompressArg:: "--format=lzma";
APT::Compressor::lzma::CompressArg:: "-6";
APT::Compressor::lzma::UncompressArg "";
APT::Compressor::lzma::UncompressArg:: "--format=lzma";
APT::Compressor::lzma::UncompressArg:: "-d";
APT::Architectures "";
APT::Architectures:: "amd64";
APT::Architectures:: "i386";
APT::Architectures:: "armel";
APT::Architectures:: "mipsel";
Dir "/";
Dir::State "var/lib/apt/";
Dir::State::lists "lists/";
Dir::State::cdroms "cdroms.list";
Dir::State::mirrors "mirrors/";
Dir::State::extended_states "extended_states";
Dir::State::status "/var/lib/dpkg/status";
Dir::Cache "var/cache/apt/";
Dir::Cache::archives "archives/";
Dir::Cache::srcpkgcache "srcpkgcache.bin";
Dir::Cache::pkgcache "pkgcache.bin";
Dir::Etc "etc/apt/";
Dir::Etc::sourcelist "sources.list";
Dir::Etc::sourceparts "sources.list.d";
Dir::Etc::main "apt.conf";
Dir::Etc::netrc "auth.conf";
Dir::Etc::parts "apt.conf.d";
Dir::Etc::preferences "preferences";
Dir::Etc::preferencesparts "preferences.d";
Dir::Etc::trusted "trusted.gpg";
Dir::Etc::trustedparts "trusted.gpg.d";
Dir::Etc::apt-file-main "apt-file.conf";
Dir::Bin "";
Dir::Bin::methods "/usr/lib/apt/methods";
Dir::Bin::solvers "";
Dir::Bin::solvers:: "/usr/lib/apt/solvers";
Dir::Bin::dpkg "/usr/bin/dpkg";
Dir::Bin::gzip "/bin/gzip";
Dir::Bin::bzip2 "/bin/bzip2";
Dir::Bin::xz "/usr/bin/xz";
Dir::Bin::lz4 "/usr/bin/lz4";
Dir::Bin::lzma "/usr/bin/xz";
Dir::Media "";
Dir::Media::MountPath "/media/apt";
Dir::Log "var/log/apt";
Dir::Log::Terminal "term.log";
Dir::Log::History "history.log";
Dir::Log::Planner "eipp.log.xz";
Dir::Ignore-Files-Silently "";
Dir::Ignore-Files-Silently:: "~$";
Dir::Ignore-Files-Silently:: "\.disabled$";
Dir::Ignore-Files-Silently:: "\.bak$";
Dir::Ignore-Files-Silently:: "\.dpkg-[a-z]+$";
Dir::Ignore-Files-Silently:: "\.save$";
Dir::Ignore-Files-Silently:: "\.orig$";
Dir::Ignore-Files-Silently:: "\.distUpgrade$";
Acquire "";
Acquire::AllowInsecureRepositories "0";
Acquire::AllowWeakRepositories "0";
Acquire::AllowDowngradeToInsecureRepositories "0";
Acquire::cdrom "";
Acquire::cdrom::mount "/media/cdrom/";
Acquire::IndexTargets "";
Acquire::IndexTargets::deb "";
Acquire::IndexTargets::deb::Packages "";
Acquire::IndexTargets::deb::Packages::MetaKey 
"$(COMPONENT)/binary-$(ARCHITECTURE)/Packages";
Acquire::IndexTargets::deb::Packages::flatMetaKey "Packages";
Acquire::IndexTargets::deb::Packages::ShortDescription "Packages";
Acquire::IndexTargets::deb::Packages::Description "$(RELEASE)/$(COMPONENT) 
$(ARCHITECTURE) Packages";
Acquire::IndexTargets::deb::Packages::flatDescription "$(RELEASE) Packages";
Acquire::IndexTargets::deb::Packages::Optional "0";
Acquire::IndexTargets::deb::Translations "";
Acquire::IndexTargets::deb::Translations::MetaKey 
"$(COMPONENT)/i18n/Translation-$(LANGUAGE)";
Acquire::IndexTargets::deb::Translations::flatMetaKey "$(LANGUAGE)";
Acquire::IndexTargets::deb::Translations::ShortDescription 
"Translation-$(LANGUAGE)";
Acquire::IndexTargets::deb::Translations::Description "$(RELEASE)/$(COMPONENT) 
Translation-$(LANGUAGE)";
Acquire::IndexTargets::deb::Translations::flatDescription "$(RELEASE) 
Translation-$(LANGUAGE)";
Acquire::IndexTargets::deb::Contents-deb "";
Acquire::IndexTargets::deb::Contents-deb::PDiffs "true";
Acquire::IndexTargets::deb::Contents-deb::MetaKey 
"$(COMPONENT)/Contents-$(ARCHITECTURE)";
Acquire::IndexTargets::deb::Contents-deb::ShortDescription 
"Contents-$(ARCHITECTURE)";
Acquire::IndexTargets::deb::Contents-deb::Description "$(RELEASE)/$(COMPONENT) 
$(ARCHITECTURE) Contents (deb)";
Acquire::IndexTargets::deb::Contents-deb::flatMetaKey 
"Contents-$(ARCHITECTURE)";
Acquire::IndexTargets::deb::Contents-deb::flatDescription "$(RELEASE) Contents 
(deb)";
Acquire::IndexTargets::deb::Contents-deb::KeepCompressed "true";
Acquire::IndexTargets::deb::Contents-udeb "";
Acquire::IndexTargets::deb::Contents-udeb::PDiffs "true";
Acquire::IndexTargets::deb::Contents-udeb::MetaKey 
"$(COMPONENT)/Contents-udeb-$(ARCHITECTURE)";
Acquire::IndexTargets::deb::Contents-udeb::ShortDescription 
"Contents-udeb-$(ARCHITECTURE)";
Acquire::IndexTargets::deb::Contents-udeb::Description "$(RELEASE)/$(COMPONENT) 
$(ARCHITECTURE) Contents (udeb)";
Acquire::IndexTargets::deb::Contents-udeb::flatMetaKey 
"Contents-udeb-$(ARCHITECTURE)";
Acquire::IndexTargets::deb::Contents-udeb::flatDescription "$(RELEASE) Contents 
(udeb)";
Acquire::IndexTargets::deb::Contents-udeb::KeepCompressed "true";
Acquire::IndexTargets::deb::Contents-udeb::DefaultEnabled "false";
Acquire::IndexTargets::deb-src "";
Acquire::IndexTargets::deb-src::Sources "";
Acquire::IndexTargets::deb-src::Sources::MetaKey "$(COMPONENT)/source/Sources";
Acquire::IndexTargets::deb-src::Sources::flatMetaKey "Sources";
Acquire::IndexTargets::deb-src::Sources::ShortDescription "Sources";
Acquire::IndexTargets::deb-src::Sources::Description "$(RELEASE)/$(COMPONENT) 
Sources";
Acquire::IndexTargets::deb-src::Sources::flatDescription "$(RELEASE) Sources";
Acquire::IndexTargets::deb-src::Sources::Optional "0";
Acquire::IndexTargets::deb-src::Contents-dsc "";
Acquire::IndexTargets::deb-src::Contents-dsc::PDiffs "true";
Acquire::IndexTargets::deb-src::Contents-dsc::MetaKey 
"$(COMPONENT)/Contents-source";
Acquire::IndexTargets::deb-src::Contents-dsc::ShortDescription 
"Contents-source";
Acquire::IndexTargets::deb-src::Contents-dsc::Description 
"$(RELEASE)/$(COMPONENT) source Contents (dsc)";
Acquire::IndexTargets::deb-src::Contents-dsc::flatMetaKey "Contents-source";
Acquire::IndexTargets::deb-src::Contents-dsc::flatDescription "$(RELEASE) 
Contents (dsc)";
Acquire::IndexTargets::deb-src::Contents-dsc::KeepCompressed "true";
Acquire::IndexTargets::deb-src::Contents-dsc::DefaultEnabled "false";
Acquire::Changelogs "";
Acquire::Changelogs::URI "";
Acquire::Changelogs::URI::Origin "";
Acquire::Changelogs::URI::Origin::Debian 
"http://metadata.ftp-master.debian.org/changelogs/@CHANGEPATH@_changelog";;
Acquire::Changelogs::URI::Origin::Tanglu 
"http://metadata.tanglu.org/changelogs/@CHANGEPATH@_changelog";;
Acquire::Changelogs::URI::Origin::Ubuntu 
"http://changelogs.ubuntu.com/changelogs/pool/@CHANGEPATH@/changelog";;
Acquire::Changelogs::URI::Origin::Ultimedia 
"http://packages.ultimediaos.com/changelogs/pool/@CHANGEPATH@/changelog.txt";;
Acquire::Changelogs::AlwaysOnline "";
Acquire::Changelogs::AlwaysOnline::Origin "";
Acquire::Changelogs::AlwaysOnline::Origin::Ubuntu "1";
Acquire::Pdiffs "no";
Acquire::CompressionTypes "";
Acquire::CompressionTypes::Order "";
Acquire::CompressionTypes::Order:: "gz";
Acquire::CompressionTypes::xz "xz";
Acquire::CompressionTypes::bz2 "bzip2";
Acquire::CompressionTypes::lzma "lzma";
Acquire::CompressionTypes::gz "gzip";
Acquire::CompressionTypes::lz4 "lz4";
Acquire::ftp.ch.debian.org "";
Acquire::ftp.ch.debian.org::By-Hash "force";
Acquire::GzipIndexes "yes";
Acquire::Languages "";
Acquire::Languages:: "none";
DPkg "";
DPkg::Pre-Install-Pkgs "";
DPkg::Pre-Install-Pkgs:: "/usr/sbin/dpkg-preconfigure --apt || true";
Binary "apt-config";
Binary::apt "";
Binary::apt::APT "";
Binary::apt::APT::Color "1";
Binary::apt::APT::Cache "";
Binary::apt::APT::Cache::Show "";
Binary::apt::APT::Cache::Show::Version "2";
Binary::apt::APT::Cache::AllVersions "0";
Binary::apt::APT::Cache::ShowVirtuals "1";
Binary::apt::APT::Cache::Search "";
Binary::apt::APT::Cache::Search::Version "2";
Binary::apt::APT::Cache::ShowDependencyType "1";
Binary::apt::APT::Cache::ShowVersion "1";
Binary::apt::APT::Get "";
Binary::apt::APT::Get::Upgrade-Allow-New "1";
Binary::apt::APT::Cmd "";
Binary::apt::APT::Cmd::Show-Update-Stats "1";
Binary::apt::APT::Keep-Downloaded-Packages "0";
Binary::apt::DPkg "";
Binary::apt::DPkg::Progress-Fancy "1";
Binary::apt-get "";
Binary::apt-get::Acquire "";
Binary::apt-get::Acquire::AllowInsecureRepositories "1";
CommandLine "";
CommandLine::AsString "apt-config dump";

-- (no /etc/apt/preferences present) --


-- (no /etc/apt/preferences.d/* present) --


-- /etc/apt/sources.list --

deb http://deb.debian.org/debian testing main contrib non-free
deb-src http://deb.debian.org/debian testing main contrib non-free

deb http://deb.debian.org/debian unstable main contrib non-free
deb-src http://deb.debian.org/debian unstable main contrib non-free
#deb http://deb.debian.org/debian sid main contrib non-free
#deb-src http://deb.debian.org/debian sid main contrib non-free

-- /etc/apt/sources.list.d/google-chrome-unstable.list --

### THIS FILE IS AUTOMATICALLY CONFIGURED ###
# You may comment out this entry, but any other modifications may be lost.
deb [arch=amd64] http://dl.google.com/linux/chrome/deb/ stable main

-- System Information:
Debian Release: stretch/sid
  APT prefers testing
  APT policy: (990, 'testing'), (500, 'unstable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386, armel, mipsel

Kernel: Linux 4.6.0-1-amd64 (SMP w/8 CPU cores)
Locale: LANG=de_DE.UTF-8, LC_CTYPE=de_DE.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages apt depends on:
ii  adduser                 3.115
ii  debian-archive-keyring  2014.3
ii  gpgv                    1.4.20-6
ii  init-system-helpers     1.42
ii  libapt-pkg5.0           1.3~rc2
ii  libc6                   2.23-4
ii  libgcc1                 1:6.1.1-11
ii  libstdc++6              6.1.1-11

Versions of packages apt recommends:
ii  gnupg   1.4.20-6
ii  gnupg2  2.1.11-7

Versions of packages apt suggests:
pn  apt-doc         <none>
ii  aptitude        0.8.3-1
ii  dpkg-dev        1.18.10
ii  powermgmt-base  1.31+nmu1
ii  python-apt      1.1.0~beta5

-- no debconf information

--- End Message ---
--- Begin Message ---
On Tue, Mar 13, 2018 at 02:48:07AM +0300, sergio wrote:
> # apt-config dump | grep -i pdiff
> Acquire::IndexTargets::deb::Contents-deb::PDiffs "true";
> Acquire::IndexTargets::deb::Contents-udeb::PDiffs "true";
> Acquire::IndexTargets::deb::Contents-deb-legacy::PDiffs "true";
> Acquire::IndexTargets::deb-src::Contents-dsc::PDiffs "true";
> Acquire::PDiffs "false";

"man sources.list" says:
| PDiffs … Defaults to the value of the option with the same name for
| a specific index file defined in the Acquire::IndexTargets scope,
| which itself defaults to the value of configuration option
| Acquire::PDiffs which defaults to yes.

"man apt.conf" PDiffs entry points to sources.list in case you wonder
how you should find it (beside that it is a common concept that generic
options are overridden by specifics).

So, that works as documented and intended.

Moving a file from 00 to 99 is not a "prio lowering" btw, it just
changes the sorting order as apt.conf documents that files are read in
order and 00 sorts before 99 – so you can override settings in the
earlier files with later files, but that requires that you actually
override the settings, not just setting a (for these files) unused
default.


Also, are you really sure you want to disable pdiffs for Content files?
The file is updated every 6 hours and (compressed!) larger than 35 MB…
Your connection bandwidth and speed must be extremely large to offset
this.

Anyhow, the bugreport already includes this & documents that apt-file
does this by intend and wont change the default as it would end up worse
for the (waste) majority of users – hence the bugreport isn't actionable
(especially not in apt) and lies somewhere between wontfix, opinion and
user-error: Therefore I am closing it.


Best regards

David Kalnischkies

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--- End Message ---

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