diff --git a/live-build/auto/config b/live-build/auto/config
index 65f5df56..2ec19bfe 100755
--- a/live-build/auto/config
+++ b/live-build/auto/config
@@ -37,45 +37,7 @@ cp -af /usr/share/livecd-rootfs/live-build/snap-seed-parse.py config/snap-seed-p
 
 mkdir -p config/package-lists
 
-add_task ()
-{
-	local pass="$1"
-	shift
-	local task
-
-	# The removal of direct task installation support from live-build
-	# poses some problems.  If the chroot has multiarch configured - for
-	# example, if we're building for amd64 - then dumpavail will show
-	# foreign-architecture packages which will have their own Task
-	# lines, but which we don't want to install.  (Compare
-	# PackageContainerInterface::FromTask in apt, which restricts task
-	# expansion to the native architecture.)  We therefore restrict our
-	# search to stanzas with Architecture: $ARCH or all.
-	#
-	# However, even this may not be accurate enough.  At the moment I
-	# have no idea what happens if an Architecture: all package has
-	# different Task fields on different architectures.  This is
-	# probably a lurking timebomb that we need to fix.  In the meantime,
-	# the Architecture restriction at least saves us from abject
-	# failure.
-
-	for task; do
-		# We need a ridiculous number of backslashes to protect
-		# parentheses from eval.
-		echo "!chroot chroot apt-cache dumpavail | grep-dctrl -nsPackage \\\\\\( -XFArchitecture $ARCH -o -XFArchitecture all \\\\\\) -a -wFTask $task" >> "config/package-lists/livecd-rootfs.list.chroot_$pass"
-	done
-}
-
-add_package ()
-{
-	local pass="$1"
-	shift
-	local pkg
-
-	for pkg; do
-		echo "$pkg" >> "config/package-lists/livecd-rootfs.list.chroot_$pass"
-	done
-}
+. config/functions
 
 OPTS=
 COMPONENTS=
diff --git a/live-build/functions b/live-build/functions
index 2cbe3e02..fe6da6d9 100644
--- a/live-build/functions
+++ b/live-build/functions
@@ -501,3 +501,44 @@ snap_preseed() {
     fi
     _snap_preseed $CHROOT_ROOT $SNAP $CHANNEL
 }
+
+
+add_task ()
+{
+	local pass="$1"
+	shift
+	local task
+
+	# The removal of direct task installation support from live-build
+	# poses some problems.  If the chroot has multiarch configured - for
+	# example, if we're building for amd64 - then dumpavail will show
+	# foreign-architecture packages which will have their own Task
+	# lines, but which we don't want to install.  (Compare
+	# PackageContainerInterface::FromTask in apt, which restricts task
+	# expansion to the native architecture.)  We therefore restrict our
+	# search to stanzas with Architecture: $ARCH or all.
+	#
+	# However, even this may not be accurate enough.  At the moment I
+	# have no idea what happens if an Architecture: all package has
+	# different Task fields on different architectures.  This is
+	# probably a lurking timebomb that we need to fix.  In the meantime,
+	# the Architecture restriction at least saves us from abject
+	# failure.
+
+	for task; do
+		# We need a ridiculous number of backslashes to protect
+		# parentheses from eval.
+		echo "!chroot chroot apt-cache dumpavail | grep-dctrl -nsPackage \\\\\\( -XFArchitecture $ARCH -o -XFArchitecture all \\\\\\) -a -wFTask $task" >> "config/package-lists/livecd-rootfs.list.chroot_$pass"
+	done
+}
+
+add_package ()
+{
+	local pass="$1"
+	shift
+	local pkg
+
+	for pkg; do
+		echo "$pkg" >> "config/package-lists/livecd-rootfs.list.chroot_$pass"
+	done
+}