--- a/src/version.bash
+++ b/src/version.bash
@@ -3,36 +3,25 @@
 # Use of this source code is governed by a BSD-style
 # license that can be found in the LICENSE file.
 
-# Check that we can use 'hg'
-if ! hg version > /dev/null 2>&1; then
-	echo 'hg not installed' 1>&2
-	exit 2
-fi
+cd $(dirname $0)/..
 
 # Get numerical revision
-VERSION=$(hg identify -n 2>/dev/null)
-if [ $? != 0 ]; then
-	OLD=$(hg identify | sed 1q)
-	VERSION=$(echo $OLD | awk '{print $1}')
-fi
+# DEBIAN: We don't have a numerical revision
+VERSION=
 
 # Get branch type
+# DEBIAN: Get release/weekly from source package name
 BRANCH=release
-if [ "$(hg identify -b 2>/dev/null)" == "default" ]; then
+if [ "$(dpkg-parsechangelog | sed -n 's/Source: golang-//p;')" == "" ]; then
 	BRANCH=weekly
 fi
 
 # Find most recent known release or weekly tag.
-TAG=$(hg tags |
-	grep $BRANCH |
-	sed 's/:.*//' |
-	sort -rn -k2 |
-	awk -v ver=$VERSION '$2 <= ver && $1~/^(release|weekly)\./ {print $1}' |
-	sed -n 1p)
+# DEBIAN: get tag from Debian changelog version
+TAG=$BRANCH.$(dpkg-parsechangelog | sed -n 's/Version: \([^-]*\)-.*/\1/p;')
 
 if [ "$TAG" != "" ]; then
 	VERSION="$TAG $VERSION"
 fi
 
 echo $VERSION
-