diff --git a/debian-elts.sh b/debian-elts.sh
index cfb3256..3339875 100755
--- a/debian-elts.sh
+++ b/debian-elts.sh
@@ -1,34 +1,52 @@
 #!/bin/bash
-# requires: debmirror
 set -e
 set -o pipefail
 
 _here=$(dirname $(realpath $0))
-function join { local IFS=","; echo "$*"; }
+apt_sync="${_here}/apt-sync.py"
+function join_by { local IFS="$1"; shift; echo "$*"; }
 
-# standard tunasync env
+UPSTREAM=${TUNASYNC_UPSTREAM_URL:-"https://deb.freexian.com/extended-lts"}
 BASE_PATH="${TUNASYNC_WORKING_DIR}"
-APT_URL=${TUNASYNC_UPSTREAM_URL:-"https://deb.freexian.com/extended-lts"}
-
-# parse APT_URL to different parts
-proto="$(printf "$APT_URL" | grep :// | sed -e's,^\(.*://\).*,\1,g')"
-url="$(printf ${APT_URL/$proto/})"
-host="$(printf $url | cut -d/ -f1)"
-path="/$(printf $url | grep / | cut -d/ -f2-)"
-
-# override by env if needed
-APT_HOST=${DEBMIRROR_HOST:-$host}
-APT_PROTO=${DEBMIRROR_PROTO:-$proto}
-APT_PATH=${DEBMIRROR_PATH:-$path}
-APT_KEYRING_FILE=${DEBMIRROR_APT_KEYRING:-"https://deb.freexian.com/extended-lts/archive-key.gpg"}
-
-# leave all possible values here
-# debmirror will only download the intersection of provided options and the repo provides
-ARCHES=(amd64 i386 armhf armel arm64)
-DIST=(jessie stretch)
-
-# download keyring
-keyring_file="/tmp/freexian.$RANDOM.kbx"
-wget "$APT_KEYRING_FILE" -O "$keyring_file"
-
-debmirror -a $(join "${ARCHES[@]}") -d $(join "${DIST[@]}") -h "$APT_HOST" -r "$APT_PATH" --method ${APT_PROTO} -v --keyring "$keyring_file" --diff mirror --rsync-extra none --i18n --getcontents "${BASE_PATH}"
+export REPO_SIZE_FILE=/tmp/reposize.$RANDOM
+
+# see https://www.freexian.com/lts/extended/ for possible values
+    codenames=(jessie                 stretch)
+   components=(main,contrib,non-free  main,contrib,non-free)
+architectures=(i386,amd64,armhf,armel i386,amd64,armhf)
+
+"$apt_sync" --delete "${UPSTREAM}" "$(join_by , "${codenames[@]}")" "$(join_by : "${components[@]}")" "$(join_by : "${architectures[@]}")" "$BASE_PATH"
+
+"${_here}/helpers/size-sum.sh" $REPO_SIZE_FILE --rm
+
+
+# =================== old script using debmirror ===================
+# requires: debmirror
+# function join { local IFS=","; echo "$*"; }
+
+# # standard tunasync env
+# BASE_PATH="${TUNASYNC_WORKING_DIR}"
+# APT_URL=${TUNASYNC_UPSTREAM_URL:-"https://deb.freexian.com/extended-lts"}
+
+# # parse APT_URL to different parts
+# proto="$(printf "$APT_URL" | grep :// | sed -e's,^\(.*://\).*,\1,g')"
+# url="$(printf ${APT_URL/$proto/})"
+# host="$(printf $url | cut -d/ -f1)"
+# path="/$(printf $url | grep / | cut -d/ -f2-)"
+
+# # override by env if needed
+# APT_HOST=${DEBMIRROR_HOST:-$host}
+# APT_PROTO=${DEBMIRROR_PROTO:-$proto}
+# APT_PATH=${DEBMIRROR_PATH:-$path}
+# APT_KEYRING_FILE=${DEBMIRROR_APT_KEYRING:-"https://deb.freexian.com/extended-lts/archive-key.gpg"}
+
+# # leave all possible values here
+# # debmirror will only download the intersection of provided options and the repo provides
+# ARCHES=(amd64 i386 armhf armel arm64)
+# DIST=(jessie stretch)
+
+# # download keyring
+# keyring_file="/tmp/freexian.$RANDOM.kbx"
+# wget "$APT_KEYRING_FILE" -O "$keyring_file"
+
+# debmirror -a $(join "${ARCHES[@]}") -d $(join "${DIST[@]}") -h "$APT_HOST" -r "$APT_PATH" --method ${APT_PROTO} -v --keyring "$keyring_file" --diff mirror --rsync-extra none --i18n --getcontents "${BASE_PATH}"