Adding shortcut helper for dctrl-tools.

This 'Packages' shortcut helper can be used for simplified
usage of grep-aptavailable from dctrl-tools.

Rather than needing to specify the following explicit command:

  ! grep-aptavail -n -sPackage -FPriority standard

in package lists, the following shortcut can be used:

  ! Packages Priority standard

Makefile

@@ -4,7 +4,7 @@ SHELL := sh -e
 
 LANGUAGES = $(shell cd manpages/po && ls)
 
-SCRIPTS = bin/* frontends/cgi/live-build-cgi frontends/cgi/live-build-cgi.cron functions/* examples/auto/* examples/hooks/* scripts/*.sh scripts/*/* share/hooks/*
+SCRIPTS = bin/* frontends/cgi/live-build-cgi frontends/cgi/live-build-cgi.cron functions/* examples/auto/* examples/hooks/* scripts/*.sh scripts/*/* share/bin/* share/hooks/*
 
 all: build
 

scripts/build/lb_binary_package-lists

@@ -51,6 +51,13 @@ then
 	# Installing depends
 	Install_package
 
+	if [ -e "${LIVE_BUILD}/share/bin/Packages" ]
+	then
+		cp "${LIVE_BUILD}/share/bin/Packages" chroot/bin
+	else
+		cp /usr/share/live/build/bin/Packages chroot/bin
+	fi
+
 	mkdir -p chroot/binary.deb/archives/partial
 	mv chroot/var/lib/dpkg/status chroot/var/lib/dpkg/status.tmp
 	touch chroot/var/lib/dpkg/status
@@ -121,6 +128,8 @@ then
 
 	cd "${OLDPWD}"
 
+	rm -f chroot/bin/Packages
+
 	rm -rf chroot/binary.deb
 	mv chroot/var/lib/dpkg/status.tmp chroot/var/lib/dpkg/status
 

scripts/build/lb_chroot_package-lists

@@ -55,6 +55,13 @@ then
 	# Installing depends
 	Install_package
 
+	if [ -e "${LIVE_BUILD}/share/bin/Packages" ]
+	then
+		cp "${LIVE_BUILD}/share/bin/Packages" chroot/bin
+	else
+		cp /usr/share/live/build/bin/Packages chroot/bin
+	fi
+
 	for LIST in config/package-lists/*.list \
 		    config/package-lists/*.list.chroot \
 		    config/package-lists/*.list.chroot_${_PASS}
@@ -67,6 +74,8 @@ then
 		fi
 	done
 
+	rm -f chroot/bin/Packages
+
 	# Removing dctrl-tools again if the user has not installed it
 	if ! grep -qs dctrl-tools chroot/root/packages.chroot
 	then

share/bin/Packages

@@ -0,0 +1,30 @@
+#!/bin/sh
+
+## live-build(7) - System Build Scripts
+## Copyright (C) 2006-2012 Daniel Baumann <daniel@debian.org>
+##
+## live-build comes with ABSOLUTELY NO WARRANTY; for details see COPYING.
+## This is free software, and you are welcome to redistribute it
+## under certain conditions; see COPYING for details.
+
+
+set -e
+
+if [ ! -e /usr/bin/grep-aptavail ]
+then
+	echo "E: /usr/bin/grep-aptavail: No such file."
+
+	exit 1
+fi
+
+if [ -z "${@}" ]
+then
+	echo "Usage: $(basename ${0}) FIELD VALUE"
+
+	exit 1
+fi
+
+_FIELD="${1}"
+_VALUE="${2}"
+
+grep-aptavail -n -sPackage -F${_FIELD} ${_VALUE} | sort