Package: apt
Version: 0.7.21
Severity: wishlist
Tags: patch
Please add the below patch that adds configurable support for using
debdelta to download packages in the apt cron job. It doesn't disrupt
the cron job when debdelta is not installed and when it is installed, it
defaults to on but can be turned off with a configuration option.
debdelta uses binary diffs to reduce download sizes and produces
bit-identical .deb files. People use it as a tradeoff between network
and CPU usage. The cron job will use apt-get as usual after debdelta so
that if debdelta fails or if it doesn't have the right files available
then apt will download them as usual. debdelta failures are ignored,
since they can happen occasionally. I didn't include a patch to the apt
configuration documentation, just to the cron job, you can copy the doc
line from the cron job to the docs though.
--- /etc/cron.daily/apt.orig
+++ /etc/cron.daily/apt
@@ -11,6 +11,9 @@
# "APT::Periodic::Download-Upgradeable-Packages=0",
# - Do "apt-get upgrade --download-only" every n-days (0=disable)
#
+# "APT::Periodic::Download-Upgradeable-Packages-Debdelta=1",
+# - Use debdelta-upgrade to download updates if available (0=disable)
+#
# "APT::Periodic::AutocleanInterval"
# - Do "apt-get autoclean" every n-days (0=disable)
#
@@ -194,6 +197,8 @@
eval $(apt-config shell AutocleanInterval APT::Periodic::AutocleanInterval)
UnattendedUpgradeInterval=0
eval $(apt-config shell UnattendedUpgradeInterval APT::Periodic::Unattended-Upgrade)
+Debdelta=1
+eval $(apt-config shell Debdelta APT::Periodic::Download-Upgradeable-Packages-Debdelta)
# check if we actually have to do anything
if [ $UpdateInterval -eq 0 ] &&
@@ -243,6 +248,9 @@
DOWNLOAD_UPGRADEABLE_STAMP=/var/lib/apt/periodic/download-upgradeable-stamp
if check_stamp $DOWNLOAD_UPGRADEABLE_STAMP $DownloadUpgradeableInterval; then
+ if [ $Debdelta -eq 1 ] then ;
+ debdelta-upgrade >/dev/null 2>&1 || true
+ fi
apt-get -qq -d dist-upgrade 2>/dev/null
update_stamp $DOWNLOAD_UPGRADEABLE_STAMP
fi
--
bye,
pabs
http://wiki.debian.org/PaulWise
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