On Thu, Nov 11, 2010, Guilherme Salgado wrote:
> > In fact reading that work thing you seem to be wanting to build
> > exactly what I want to build: a system that repeatably builds
> > packages in pristine chroots. I thought sbuild didn't normally do the
> > pristine chroot thing? (which is why I've been using pbuilder to
> > supply that functionality to date).
>
> Yeah, I don't think sbuild itself provides that, so I'm using schroot's
> type=file chroots for that. You just point schroot to a tarball
> containing your chroot and it will (by default) create a new session
> (with a pristine chroot) every time you 'schroot -c <name>'. If you
> want to change the contents of the tarball you can easily do that with
> 'schroot -c <name>-source'. All you need for that to work is the
> following config:
>
> [natty]
> description=Natty chroot
> type=file
> file=/var/chroots/natty.tar
> location=/natty
Seems it's actually on topic, I'd love sharing my setup! :-)
To setup, I use this schroot.conf snippet:
[natty]
type=file
description=Ubuntu natty
root-users=lool
file=/srv/schroot/chroot-ubuntu-natty-amd64.tar.bz2
location=/chroot-autobuild
preserve-environment=true
/srv/schroot/chroot-ubuntu-natty-amd64.tar.bz2 is the chroot used on
Launchpad buildds for natty/amd64. I'm attaching dl-lp-chroot which
downloads such a chroot; it's a trivial wrapper around
https://launchpad.net/api/devel/ubuntu/$dist/$arch/chroot_url URLs
To use, I then do something like:
mkdir ~/xdeb-dpkg
cd ~/xdeb-dpkg
schroot-xdeb --apt-source --only-explicit dpkg -aarmel
(the above are just whatever xdeb args I'd like to use)
schroot-xdeb will install xdeb and a cross-toolchain; it's sadly
hardcodes my local mirror, but could obviously be adapted
I should probably implement a feature to wait for confirmation before
destroying the temporary chroot on failure.
PS: the above run will fail because xdeb doesn't import selinux for some
reason; but it does illustrate things quite well here :-)
--
Loïc Minier
#!/bin/sh
# dl-lp-chroot - download a chroot tarball from Launchpad
# Copyright (C) 2010 Loïc Minier <[email protected]>
#
# Permission is hereby granted, free of charge, to any person obtaining a
# copy of this software and associated documentation files (the "Software"),
# to deal in the Software without restriction, including without limitation
# the rights to use, copy, modify, merge, publish, distribute, sublicense,
# and/or sell copies of the Software, and to permit persons to whom the
# Software is furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
# SOFTWARE IN THE PUBLIC INTEREST, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR
# OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
# ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
# DEALINGS IN THE SOFTWARE.
#
# Except as contained in this notice, the name of the author shall not be used
# in advertising or otherwise to promote the sale, use or other dealings in
# this Software without prior written authorization from the author.
#
# depends: wget
set -e
self="$(basename "$0")"
arch="`dpkg --print-architecture`"
dist="`lsb_release -cs`"
output_file=""
usage() {
echo "Usage: $self [--arch <arch>] [--dist <dist>] [-O output-file]" >&2
}
die() {
echo "$*" >&2
exit 1
}
if ! which wget >/dev/null; then
die "Please install wget"
fi
while [ $# -gt 0 ]; do
case "$1" in
--help)
usage
exit 0
;;
--arch)
arch="$2"
if [ -z "$arch" ]; then
die "Empty arch argument"
fi
shift 2
;;
--dist)
dist="$2"
if [ -z "$dist" ]; then
die "Empty dist argument"
fi
shift 2
;;
-O)
output_file="$2"
if [ -z "$output_file" ]; then
die "Empty output file argument"
fi
shift 2
;;
*)
die "Unknown argument $1"
;;
esac
done
chroot_url="`wget -q -O -
"https://launchpad.net/api/devel/ubuntu/$dist/$arch/chroot_url"; | tr -d '"'`"
exec wget ${output_file:+-O "$output_file"} "$chroot_url"
#!/bin/sh
set -e
dist="natty"
chroot="$dist"
arch="armel"
cross_pkgs="binutils-arm-linux-gnueabi gcc-arm-linux-gnueabi
g++-arm-linux-gnueabi libc6-armel-cross"
session=""
cleanup() {
if [ -n "$session" ]; then
schroot -c "$session" -e
session=""
fi
}
export LC_ALL=C
session=`schroot -c "$chroot" -b`
trap "cleanup" 0 1 2 3 9 11 13 15
run_root() {
schroot -c "$session" -r -u root -- "$@"
}
run() {
schroot -c "$session" -r -- ""$@
}
run_root tee /etc/apt/sources.list >/dev/null <<EOF
deb http://mirror.dooz.org/ubuntu/ $dist main restricted universe multiverse
deb-src http://mirror.dooz.org/ubuntu/ $dist main restricted universe multiverse
deb [arch=$arch] http://mirror.dooz.org/ubuntu-ports/ $dist main restricted
universe multiverse
EOF
run_root apt-get update
# don't need these, and won't work with xdeb (only with
# launchpad-buildd/sbuild)
run_root apt-get -y purge pkg-create-dbgsym pkgbinarymangler
run_root apt-get -y autoremove
run_root apt-get -y install --no-install-recommends xdeb
run_root apt-get -y install --no-install-recommends $cross_pkgs
run_root apt-get clean
# setup password-less sudo
run_root tee -a /etc/sudoers >/dev/null <<EOF
ALL ALL=(ALL) NOPASSWD: ALL
EOF
run xdeb -a "$arch" "$@"
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