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=== Status ===
 
=== Status ===
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* Debian chroot construction has been automated: see [http://dev.laptop.org/git/users/mstone/puritan/snapshot/puritan-sugar.tar.bz2 puritan-sugar.tar.bz2] and its [http://dev.laptop.org/git/users/mstone/puritan/tree/README?h=sugar README] -- [[User:Mstone|Michael Stone]] 20:33, 1 August 2009 (UTC)
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* sugar-chroot-0.1 released: see [http://dev.laptop.org/git/users/mstone/sugar-chroot sugar-chroot]
* Sugar continues to run happily in Squeeze chroots. --[[User:Mstone|Michael Stone]] 16:30, 3 July 2009 (UTC)
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* Sugar is now somewhat runnable from chroots. Jaunty and Squeeze have been tested recently; Fedora has not. --[[User:Mstone|Michael Stone]] 22:21, 23 May 2009 (UTC)
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=== Chroot Construction ===
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=== Purpose ===
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There are lots of ways to create appropriate chroots; e.g. by hand, with debootstrap, with mock, etc.
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''You want to hack sugar. You don't want to fuss around. '''You want sugar-chroot.'''''
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Here are some ideas to help you get started:
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=== Usage ===
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==== Ubuntu jaunty chroot ====
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As excerpted from the '''[http://dev.laptop.org/git/users/mstone/sugar-chroot/plain/README README]''':
With ''recent'' versions of debootstrap, in order to get a working chroot, you want something like:  
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export CHROOT=`pwd`/jaunty-root
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sugar-chroot consists of simple scripts. Download and unpack them like so:
sudo debootstrap --arch i386 jaunty $CHROOT http://ubuntu.media.mit.edu/ubuntu/
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sudo chroot $CHROOT /bin/bash -l
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mount -t proc proc /proc
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mount -t devpts devpts /dev/pts
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==== Debian squeeze chroot ====
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NV=sugar-chroot-0.1
With debootstrap, in order to get a working chroot, you want something like:  
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curl http://dev.laptop.org/~mstone/releases/SOURCES/$NV.tar.xz | tar Zxf $NV.tar.xz
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cd $NV
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export CHROOT=`pwd`/sid-root
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To use them, pick a supported distro:
sudo debootstrap --arch i386 squeeze $CHROOT http://debian.lcs.mit.edu/debian
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  # and some of the following:
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  DISTRO=debian
  mount -t tmpfs tmpfs $CHROOT/tmp
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  DISTRO=fedora
mount -t proc proc $CHROOT/proc
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mount -t devpts devpts $CHROOT/dev/pts
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mount -t selinuxfs selinux $CHROOT/selinux
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# and to enter the chroot
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To configure:
sudo chroot $CHROOT /bin/bash -l
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''Reference: http://www.debian.org/doc/manuals/reference/ch-tips.en.html ''
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echo $DISTRO > conf/distro
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$EDITOR conf/$DISTRO.mk
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''Note'': you can use approx to cache packages across multiple runs for faster testing:
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Then run
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apt-get install approx
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  sudo make r/distro
echo 'debian http://debian.lcs.mit.edu/debian' >> /etc/approx/approx.conf
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/etc/init.d/approx restart
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  sudo debootstrap --arch i386 squeeze $CHROOT http://localhost:9999/debian
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==== Fedora rawhide chroot ====
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to install your chroot.
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We will use <tt>febootstrap</tt> to construct our Fedora chroot. Install it with:
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=== History ===
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yum install febootstrap            # or
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See http://wiki.sugarlabs.org/index.php?title=Development_Team/Chroot&oldid=36911 for the manual instructions which sugar-chroot automates.
apt-get install febootstrap
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: ''(Note for Debian users -- Fedora 11 and up require versions of <tt>rpm</tt> built with fancy features. I have successfully run these instructions with rpm_4.7.1-4_i386, which, at the time, I built from sources in Debian Experimental.)''
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Then run it like so:
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export CHROOT=`pwd`/f11
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sudo febootstrap fedora-11 $CHROOT    # sugar-0.84
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or
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export CHROOT=`pwd`/f12
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sudo febootstrap fedora-12 $CHROOT    # sugar-0.85.5, at the time of writing
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==== Gentoo chroot ====
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Well, if you are familiar with regular Gentoo installation process(by using [http://www.gentoo.org/doc/en/handbook/ Handbook] instead of GUI stuff) you should know how to setup Gentoo chtoot :). Otherwise use these instructions.
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* Firstly, you need Gentoo stage tarball. You can borrow it from any [http://www.gentoo.org/main/en/mirrolrs2.xml mirror] (use releases/<platform>/current sub directory).
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* Lets think you are using stage3-i686-20090623.tar.bz2, then:
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mkdir chroot-gentoo
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tar xjpf stage3-i686-20090623.tar.bz2 -C chroot-gentoo
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mount -o bind /dev chroot-gentoo/dev
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mount -o bind /proc chroot-gentoo/proc
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chroot chroot-gentoo /bin/bash
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* To install sugar, use [[Community/Distributions/Gentoo|sugar-overlay]] or setup [[Development_Team/Jhbuild|sugar-jhbuild]] environment(with [[Community/Distributions/Gentoo#Packages|sugar-overlay]] you can install git packages as well).
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=== Sugar Installation ===
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==== jaunty chroot ====
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sed -ie "s/main/main universe/" /etc/apt/sources.list
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apt-get update
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apt-get install locales
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locale-gen "$LANG"
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dpkg-reconfigure tzdata
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apt-get install sugar sugar-activities
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# install your development tools here
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# patch (hopefully temporary) bugs
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sed -ie '114i\\        if not favorites_settings.layout: favorites_settings.layout = favoriteslayout.RingLayout.key' /usr/lib/python2.6/dist-packages/jarabe/desktop/favoritesview.py
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==== squeeze chroot ====
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apt-get update
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apt-get install locales
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dpkg-reconfigure locales
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# edit /etc/hosts
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apt-get install education-desktop-sugar sugar-0.84
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# install your development tools here
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==== f12 chroot ====
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yum groupinstall sugar-desktop
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==== f11 chroot ====
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yum groupinstall sugar-desktop
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=== User Accounts ===
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For stupid reasons, it's necessary that Sugar run under a uid inside the chroot which exists as a real account outside the chroot. (Talk to the DBus people.)
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Consequently, ''as root'', run something like this ''both'' inside and outside the chroot:
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groupadd -g 64002 sugar
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useradd -m -u 64002 -g sugar -s /bin/bash sugar
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=== D-Bus ===
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Sugar wants to be able to use global state stored in both HAL and NetworkManager, both of which live on the system bus. Consequently, ''outside the chroot'', we need to
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sudo mount --bind /var/run/dbus $CHROOT/var/run/dbus
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before entering the chroot. (Mock uses unshare() to enter a new mount-point namespace since this makes garbage collection of mountpoints much easier.)
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=== X11 ===
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We need to point Sugar at an X server. One easy (but insecure) way to do this is to make a nested X server like so, ''outside the chroot'':
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Xephyr -ac :1 -screen 800x600x24 # 1024x768x24
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See the talk page for more secure alternatives.
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=== Running Sugar ===
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Then, inside the chroot, you can happily run sugar as user 'sugar' with something like
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sudo chroot $CHROOT /bin/bash -l
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su sugar -
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cd ~
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ulimit -c unlimited
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export DISPLAY=localhost:1
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export DBUS_SESSION_BUS_ADDRESS=$(dbus-daemon --session --print-address --fork)
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sugar
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Then pull up the frame, switch to the home view, and launch some activities!
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=== Cleaning Up ===
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To correctly delete a chroot that you no longer need, kill all processes running in the chroot, and
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sudo killall -u sugar
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export CHROOT=/path/to/my/chroot  # important!
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umount $CHROOT/var/run/dbus
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umount $CHROOT/proc
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umount $CHROOT/dev/pts
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umount $CHROOT/tmp
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rm -rf $CHROOT
 

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