+# make chroot profile
+mkdir -p /etc/schroot/$chrootdir
+cp /etc/schroot/default/copyfiles /etc/schroot/$chrootdir
+touch /etc/schroot/$chrootdir/nssdatabases
+
+# Copy over brokenproxy apt script to the new chroot environment
+cp /tmp/brokenproxy /opt/chroot/$chrootdir/etc/apt/apt.conf.d/80-retries
+
+# create special fstab not bind-mounting /home
+schroot_fstab="
+# <file system> <mount point> <type> <options> <dump> <pass>
+/proc /proc none rw,bind 0 0
+/sys /sys none rw,bind 0 0
+/dev /dev none rw,bind 0 0
+/dev/pts /dev/pts none rw,bind 0 0
+/tmp /tmp none rw,bind 0 0
+"
+
+cat <<EOF >/etc/schroot/$chrootdir/fstab
+$schroot_fstab
+EOF
+
+echo "Adding the following fstab mounts to /etc/schroot/$chrootdir/fstab:
+
+$schroot_fstab
+
+These rules are for the virtual filesystems used by linux in the chroot env
+"
+
+schroot_profile="
+[$chrootdir]
+description=Debian Buster for $chrootdir
+directory=/opt/chroot/$chrootdir
+groups=sbuild-security,$SUDO_USER,users
+type=directory
+profile=$chrootdir
+"
+
+if grep -x "\[$chrootdir\]" /etc/schroot/schroot.conf; then
+ echo "Found [$chrootdir] section in /etc/schroot/schroot.conf"
+else
+ # Add chroot config to schroot.conf
+ cat <<EOF >>/etc/schroot/schroot.conf
+$schroot_profile
+EOF
+
+ echo "Adding the following $chrootdir section to /etc/schroot/schroot.conf:
+
+$schroot_profile
+
+This enables you to chroot into $chrootdir as an unprivileged user by running
+'schroot -c $chrootdir /bin/bash'
+"
+fi
+
+#!!! buster backports is needed for a lot of things
+cat << EOF > /opt/chroot/$chrootdir/etc/apt/sources.list.d/buster_backports.list
+deb http://deb.debian.org/debian buster-backports main
+deb-src http://deb.debian.org/debian buster-backports main
+EOF
+
+# oooo annoying, pin preferences for buster-backports
+# make it low pririty for reproduceability
+cat << EOF > /opt/chroot/$chrootdir/etc/apt/preferences.d/99buster-backports
+Package: *
+Pin: release a=buster-backports
+Pin-Priority: 100
+
+Package: libcurl3-gnutls
+Pin: version 7.64*
+Pin-Priority: 1001
+EOF
+