diff --git a/mk.sh b/mk.sh
index 6ee2814..4cfbeb7 100755
--- a/mk.sh
+++ b/mk.sh
@@ -44,13 +44,15 @@ source "$SCRIPTDIR/util/cmake.sh"
 ############################## build toolchain ###############################
 echo "--- resolving toolchain dependencies ---"
 
-dependencies "toolchain" "tcpkg" > "$PACKAGELIST"
+include_pkg "tcpkg" "toolchain"
+dependencies | tsort | tac > "$PACKAGELIST"
 cat "$PACKAGELIST"
 
 echo "--- downloading toolchain files ---"
 
 while read pkg; do
-	fetch_package "tcpkg" "$pkg"
+	include_pkg "tcpkg" "$pkg"
+	fetch_package
 done < "$PACKAGELIST"
 
 echo "--- building toolchain ---"
@@ -58,8 +60,9 @@ echo "--- building toolchain ---"
 gen_cmake_toolchain_file
 
 while read pkg; do
-	run_tcpkg_command "$pkg" "build"
-	run_tcpkg_command "$pkg" "deploy"
+	include_pkg "tcpkg" "$pkg"
+	run_tcpkg_command "build"
+	run_tcpkg_command "deploy"
 done < "$PACKAGELIST"
 
 echo "--- backing up toolchain sysroot ---"
@@ -69,22 +72,26 @@ save_toolchain
 ############################### build packages ###############################
 echo "--- resolving package dependencies ---"
 
-dependencies "release-${CFG}" "pkg" > "$PACKAGELIST"
+include_pkg "pkg" "release-${CFG}"
+dependencies | tsort | tac > "$PACKAGELIST"
 cat "$PACKAGELIST"
 
 echo "--- downloading package files ---"
 
 while read pkg; do
-	fetch_package "pkg" "$pkg"
+	include_pkg "pkg" "$pkg"
+	fetch_package
 done < "$PACKAGELIST"
 
 echo "--- building package ---"
 
 while read pkg; do
-	install_build_deps "$pkg"
+	include_pkg "pkg" "$pkg"
 
-	run_pkg_command "$pkg" "build"
-	run_pkg_command "$pkg" "deploy"
+	install_build_deps
+
+	run_pkg_command "build"
+	run_pkg_command "deploy"
 
 	restore_toolchain
 done < "$PACKAGELIST"
diff --git a/pkg/rootfs/build b/pkg/rootfs/build
index ec2f102..2979419 100755
--- a/pkg/rootfs/build
+++ b/pkg/rootfs/build
@@ -17,7 +17,7 @@ build() {
 	fi
 
 	# install packages to rootfs
-	dependencies "rootfs" "pkg" | grep -v "rootfs" > "$BUILD/etc/packages"
+	dependencies | tsort | tac | grep -v "$PKGNAME" > "$BUILD/etc/packages"
 	echo "toolchain" >> "$BUILD/etc/packages"
 
 	while read pkgname; do
diff --git a/util/depends.sh b/util/depends.sh
index f6bd13c..caf1160 100755
--- a/util/depends.sh
+++ b/util/depends.sh
@@ -1,27 +1,23 @@
-dependencies_recursive() {
-	local NAME="$1"
-	local PKGDIR="$2"
+include_pkg() {
+	PKGDIR="$1"		# globally visible package directory
+	PKGNAME="$2"		# globally visible package name
 
 	unset -f build deploy prepare
 	unset -v VERSION TARBALL URL SRCDIR SHA256SUM DEPENDS
-	source "$SCRIPTDIR/$PKGDIR/$NAME/build"
+	source "$SCRIPTDIR/$PKGDIR/$PKGNAME/build"
+}
 
+dependencies() {
 	local depends="$DEPENDS"
 
 	if [ ! -z "$depends" ]; then
 		for DEP in $depends; do
-			echo "$NAME $DEP"
+			echo "$PKGNAME $DEP"
 		done
 
 		for DEP in $depends; do
-			dependencies_recursive "$DEP" "$PKGDIR"
+			include_pkg "$PKGDIR" "$DEP"
+			dependencies
 		done
 	fi
 }
-
-dependencies() {
-	local NAME="$1"
-	local PKGDIR="$2"
-
-	dependencies_recursive "$NAME" "$PKGDIR" | tsort | tac
-}
diff --git a/util/download.sh b/util/download.sh
index 408e26c..22efd52 100755
--- a/util/download.sh
+++ b/util/download.sh
@@ -1,11 +1,5 @@
 fetch_package() {
-	local PKGDIR="$1"
-	local NAME="$2"
-	echo "$NAME"
-
-	unset -f build deploy prepare
-	unset -v VERSION TARBALL URL SRCDIR SHA256SUM DEPENDS
-	source "$SCRIPTDIR/$PKGDIR/$NAME/build"
+	echo "$PKGNAME - download"
 
 	if [ -z "$TARBALL" ]; then
 		return
@@ -23,14 +17,14 @@ fetch_package() {
 	popd > /dev/null
 
 	if [ ! -e "$PKGSRCDIR/$SRCDIR" ]; then
-		local LOGFILE="$PKGLOGDIR/${NAME}-prepare.log"
+		local LOGFILE="$PKGLOGDIR/${PKGNAME}-prepare.log"
 
-		echo "unpacking..."
+		echo "$PKGNAME - unpack"
 		tar -C "$PKGSRCDIR" -xf "$PKGDOWNLOADDIR/$TARBALL"
 
 		pushd "$PKGSRCDIR/$SRCDIR" > /dev/null
-		echo "preparing..."
-		prepare "$SCRIPTDIR/$PKGDIR/$NAME" &>> "$LOGFILE" < /dev/null
+		echo "$PKGNAME - prepare"
+		prepare "$SCRIPTDIR/$PKGDIR/$PKGNAME" &>> "$LOGFILE" < /dev/null
 		popd > /dev/null
 	fi
 }
diff --git a/util/pkgcmd.sh b/util/pkgcmd.sh
index 6ea3ecf..abf051b 100644
--- a/util/pkgcmd.sh
+++ b/util/pkgcmd.sh
@@ -1,22 +1,16 @@
 run_pkg_command_common() {
-	local NAME="$1"
-	local FUNCTION="$2"
-	local PKGDIR="$3"
-	local DEPLOYDIR="$PKGDEPLOYDIR/$4"
-	local OUT="$PKGBUILDDIR/$5"
-	local CHECKFILE="$PKGLOGDIR/.${6}-${FUNCTION}"
+	local FUNCTION="$1"
+	local DEPLOYDIR="$PKGDEPLOYDIR/$2"
+	local OUT="$PKGBUILDDIR/$3"
+	local CHECKFILE="$PKGLOGDIR/.${4}-${FUNCTION}"
 
-	echo "$NAME - $FUNCTION"
+	echo "$PKGNAME - $FUNCTION"
 
 	if [ -e "$CHECKFILE" ]; then
 		return
 	fi
 
-	unset -f build deploy prepare
-	unset -v VERSION TARBALL URL SRCDIR SHA256SUM DEPENDS
-	source "$SCRIPTDIR/$PKGDIR/$NAME/build"
-
-	local LOGFILE="$PKGLOGDIR/${7}-${FUNCTION}.log"
+	local LOGFILE="$PKGLOGDIR/${5}-${FUNCTION}.log"
 	local SRC="$PKGSRCDIR/$SRCDIR"
 
 	mkdir -p "$DEPLOYDIR" "$OUT" "${DEPLOYDIR}-dev"
@@ -33,9 +27,9 @@ run_pkg_command_common() {
 }
 
 run_pkg_command() {
-	run_pkg_command_common "$1" "$2" "pkg" "$1" "$1" "$1" "$1"
+	run_pkg_command_common "$1" "$PKGNAME" "$PKGNAME" "$PKGNAME" "$PKGNAME"
 }
 
 run_tcpkg_command() {
-	run_pkg_command_common "$1" "$2" "tcpkg" "toolchain" "tc-$1" "tc-$1" "tc-$1"
+	run_pkg_command_common "$1" "toolchain" "tc-$PKGNAME" "tc-$PKGNAME" "tc-$PKGNAME"
 }
diff --git a/util/toolchain.sh b/util/toolchain.sh
index 5e63f64..dee0d32 100644
--- a/util/toolchain.sh
+++ b/util/toolchain.sh
@@ -14,12 +14,6 @@ restore_toolchain() {
 }
 
 install_build_deps() {
-	local NAME="$1"
-
-	unset -f build deploy prepare
-	unset -v VERSION TARBALL URL SRCDIR SHA256SUM DEPENDS
-	source "$SCRIPTDIR/pkg/$NAME/build"
-
 	if [ -z "$DEPENDS" ]; then
 		return
 	fi