live-build/hooks/minimal

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#!/bin/sh
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# /usr/share/live-helper/hooks/minimal - hook list for live-helper(7)
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# Copyright (C) 2006-2008 Daniel Baumann <daniel@debian.org>
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#
# live-helper comes with ABSOLUTELY NO WARRANTY; for details see COPYING.
# This is free software, and you are welcome to redistribute it
# under certain conditions; see COPYING for details.
set -e
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Install local packages using a local APT repo instead of using "dpkg -i" This patch modifies chroot_sources to build a small APT repo of the local-packages and use that for local package installation instead of "dpkg -i". This has a few advantages: * Removes the true ugliness that is "dpkg -i *.deb && apt-get install -f". This not only is slow and brittle, it causes scary "dpkg dependency error" messages to appear in build logs. * We can (ie. not implemented here) move to installing all the packages from: - lh_chroot_packages (ie. ${LH_PACKAGES}) - lh_chroot_local-packages (ie. config/chroot_local-packages/*.deb) - lh_chroot_local-packageslists - lh_chroot_packages-lists - lh_chroot_linux-image .. in one shot. This would primarily improve speed as we would not keep invoking ${LH_APT}, and package installations can share triggers and suchlike -- installing a custom live-initramfs via local packages currently costs an additional "update-initramfs -u" call. It would also fix a number of obscure dependency cases, such as the one documented in #475739, and--if the user is using aptitude--may even result in better resolution choices. * Removes some messy and somewhat brittle code in lh_chroot_linux-image that edgecases a local live-initramfs. The disadvantages are: * If local packages are being used and we are building in a chroot, we must refresh the sources list and rebuild the repo before building the binary images. (However, before this patch, we had to do this anyway if the binary mirrors were different from the chroot ones.) * We must add a little hack to the minimal hook to detect whether we are using local packages and not remove apt-utils (which creates the repository in lh_chroot_sources) if that is the case -- we cannot simply use "Install_package" inside lh_chroot_sources as we are not guaranteed to have working APT data because the minimal hook deliberately removes them!
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Purge() {
PACKAGE="${1}"
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if ! apt-get remove --purge --yes "${PACKAGE}"
then
echo "WARNING: ${PACKAGE} isn't installed"
fi
Install local packages using a local APT repo instead of using "dpkg -i" This patch modifies chroot_sources to build a small APT repo of the local-packages and use that for local package installation instead of "dpkg -i". This has a few advantages: * Removes the true ugliness that is "dpkg -i *.deb && apt-get install -f". This not only is slow and brittle, it causes scary "dpkg dependency error" messages to appear in build logs. * We can (ie. not implemented here) move to installing all the packages from: - lh_chroot_packages (ie. ${LH_PACKAGES}) - lh_chroot_local-packages (ie. config/chroot_local-packages/*.deb) - lh_chroot_local-packageslists - lh_chroot_packages-lists - lh_chroot_linux-image .. in one shot. This would primarily improve speed as we would not keep invoking ${LH_APT}, and package installations can share triggers and suchlike -- installing a custom live-initramfs via local packages currently costs an additional "update-initramfs -u" call. It would also fix a number of obscure dependency cases, such as the one documented in #475739, and--if the user is using aptitude--may even result in better resolution choices. * Removes some messy and somewhat brittle code in lh_chroot_linux-image that edgecases a local live-initramfs. The disadvantages are: * If local packages are being used and we are building in a chroot, we must refresh the sources list and rebuild the repo before building the binary images. (However, before this patch, we had to do this anyway if the binary mirrors were different from the chroot ones.) * We must add a little hack to the minimal hook to detect whether we are using local packages and not remove apt-utils (which creates the repository in lh_chroot_sources) if that is the case -- we cannot simply use "Install_package" inside lh_chroot_sources as we are not guaranteed to have working APT data because the minimal hook deliberately removes them!
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}
# Removing unused packages
for PACKAGE in aptitude man-db manpages info wget
do
Purge ${PACKAGE}
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done
Install local packages using a local APT repo instead of using "dpkg -i" This patch modifies chroot_sources to build a small APT repo of the local-packages and use that for local package installation instead of "dpkg -i". This has a few advantages: * Removes the true ugliness that is "dpkg -i *.deb && apt-get install -f". This not only is slow and brittle, it causes scary "dpkg dependency error" messages to appear in build logs. * We can (ie. not implemented here) move to installing all the packages from: - lh_chroot_packages (ie. ${LH_PACKAGES}) - lh_chroot_local-packages (ie. config/chroot_local-packages/*.deb) - lh_chroot_local-packageslists - lh_chroot_packages-lists - lh_chroot_linux-image .. in one shot. This would primarily improve speed as we would not keep invoking ${LH_APT}, and package installations can share triggers and suchlike -- installing a custom live-initramfs via local packages currently costs an additional "update-initramfs -u" call. It would also fix a number of obscure dependency cases, such as the one documented in #475739, and--if the user is using aptitude--may even result in better resolution choices. * Removes some messy and somewhat brittle code in lh_chroot_linux-image that edgecases a local live-initramfs. The disadvantages are: * If local packages are being used and we are building in a chroot, we must refresh the sources list and rebuild the repo before building the binary images. (However, before this patch, we had to do this anyway if the binary mirrors were different from the chroot ones.) * We must add a little hack to the minimal hook to detect whether we are using local packages and not remove apt-utils (which creates the repository in lh_chroot_sources) if that is the case -- we cannot simply use "Install_package" inside lh_chroot_sources as we are not guaranteed to have working APT data because the minimal hook deliberately removes them!
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# Remove apt-utils if we do not require it for lh_chroot_sources
if [ ! -e chroot/root/local-packages/Packages.gz ]
then
Purge apt-utils
fi
apt-get autoremove --yes || true
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# Removing unused files
find . -name *~ -print0 | xargs -0 rm -f
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rm -rf /var/cache/man/*
# Cleaning apt lists
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rm -rf /var/lib/apt/lists
mkdir -p /var/lib/apt/lists/partial
# Cleaning apt cache
rm -rf /var/cache/apt
mkdir -p /var/cache/apt/archives/partial
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# Truncating logs
for FILE in $(find /var/log/ -type f)
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do
: > ${FILE}
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done