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This directory contains my scripts to build backports of R software from Debian
sid to older Debian distributions.

Currently I am using the following setup:

~/.pbuilderrc contains:

  NAME="$DIST-$ARCH"
  APTCACHEHARDLINK=yes
  DISTRIBUTION="$DIST"
  DEBOOTSTRAPOPTS=("--arch" "$ARCH" 
    "--keyring=/usr/share/keyrings/debian-archive-keyring.gpg"
    "${DEBOOTSTRAPOPTS[@]}")
  BASETGZ="`dirname $BASETGZ`/$NAME-base.tgz"
  BUILDRESULT="/var/cache/pbuilder/$NAME/result/"
  APTCACHE="/var/cache/pbuilder/$NAME/aptcache/"
  MIRRORSITE="http://ftp.de.debian.org/debian/"
  OTHERMIRROR="deb http://security.debian.org $DIST/updates main|deb http://ftp.de.debian.org/debian $DIST-backports main|deb http://localhost/r-cran $DIST-cran35/"
  COMPONENTS="main"

This means I have the appropriate aptcache and buildresult directories set up
under /var/cache/pbuilder. I have several pbuilder images used for package
creation under /var/cache/pbuilder, among others:

  /var/cache/pbuilder/jessie-i386-base.tgz

With the pbuilderrc mentioned above, this can be created as a normal user with

  export ARCH=i386
  export DIST=jessie
  sudo -E pbuilder create

Then, using

  sudo -E pbuilder login --save-after-login

these have a standard Debian mirror, the security sources setup in their
/etc/apt/sources.list, as well as my local http package source where the r-base
package build results are available. I have also imported the apt key of my
repository inside the pbuilder chroots.

For some reason, the keyring option to debootstrap is not used (necessary on
Ubuntu) so I needed to pass this on the commandline when building the pbuilder
chroot for wheezy-i386.

When using these scripts on Debian, I used to configure sudo to allow my normal
user to use pbuilder, apt-get and the backporting scripts. Currently, I have 
set up my jessie installation using the Ubuntu like sudo configuration that
I selected during the original installation of wheezy.

I am building other architectures on different machines (raspi: armxx) or in a
local chroot (amd64).

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