diff -Nru nux-4.0.8+18.10.20180613.3/debian/changelog nux-4.0.8+18.10.20180623/debian/changelog
--- nux-4.0.8+18.10.20180613.3/debian/changelog	2018-06-25 14:55:15.000000000 +0000
+++ nux-4.0.8+18.10.20180623/debian/changelog	2018-06-25 14:55:15.000000000 +0000
@@ -1,3 +1,15 @@
+nux (4.0.8+18.10.20180623-0ubuntu1) cosmic; urgency=medium
+
+  * debian/control: update Vcs
+  * debian/nux-tools.preinst:
+    - Restore backup config files before installing nux-tools, so that they
+      will be updaded with the fixed versions (LP: #1768610)
+  * debian/rules:
+    - build tests using LIBGL_ALWAYS_SOFTWARE env var to fix build crash
+      on launchpad builders (there are memory errors in the hw drivers).
+
+ -- Marco Trevisan (Treviño) <mail@3v1n0.net>  Sat, 23 Jun 2018 07:30:26 +0000
+
 nux (4.0.8+18.10.20180613.3-0ubuntu1) cosmic; urgency=medium
 
   * debian/50_check_unity_support:
diff -Nru nux-4.0.8+18.10.20180613.3/debian/control nux-4.0.8+18.10.20180623/debian/control
--- nux-4.0.8+18.10.20180613.3/debian/control	2018-06-25 14:55:15.000000000 +0000
+++ nux-4.0.8+18.10.20180623/debian/control	2018-06-25 14:55:15.000000000 +0000
@@ -39,7 +39,8 @@
 Homepage: http://launchpad.net/nux
 # If you aren't a member of ~unity-team but need to upload packaging changes,
 # just go ahead.  ~unity-team will notice and sync up the code again.
-Vcs-Bzr: https://code.launchpad.net/~unity-team/nux/trunk
+Vcs-Browser: https://git.launchpad.net/~unity-team/nux
+Vcs-Git: https://git.launchpad.net/~unity-team/nux
 
 Package: libnux-4.0-0
 Section: libs
diff -Nru nux-4.0.8+18.10.20180613.3/debian/nux-tools.preinst nux-4.0.8+18.10.20180623/debian/nux-tools.preinst
--- nux-4.0.8+18.10.20180613.3/debian/nux-tools.preinst	1970-01-01 00:00:00.000000000 +0000
+++ nux-4.0.8+18.10.20180623/debian/nux-tools.preinst	2018-06-25 14:55:15.000000000 +0000
@@ -0,0 +1,28 @@
+#!/bin/sh
+
+set -e
+
+restore_backup_conffiles() {
+    PKGNAME="$1"
+    PREVERSION="$2"
+    MAXVERSION="$3"
+
+    if dpkg --compare-versions "$PREVERSION" lt-nl "$MAXVERSION"; then
+        conffiles="$(dpkg-query --show -f='${Conffiles}' "$PKGNAME")"
+        filepaths="$(echo "$conffiles" | cut -f-2 -d' ')"
+
+        for cfile in $filepaths; do
+          if [ -e "$cfile".x11-back ]; then
+            echo "Moving conffile $cfile back in place..."
+            mv -f "$cfile".x11-back "$cfile"
+          fi
+        done
+    fi
+}
+
+case "$1" in
+install)
+    restore_backup_conffiles nux-tools "$2" 4.0.8+18.10.20180613.3-0ubuntu1;;
+esac
+
+#DEBHELPER#
diff -Nru nux-4.0.8+18.10.20180613.3/debian/rules nux-4.0.8+18.10.20180623/debian/rules
--- nux-4.0.8+18.10.20180613.3/debian/rules	2018-06-25 14:55:15.000000000 +0000
+++ nux-4.0.8+18.10.20180623/debian/rules	2018-06-25 14:55:15.000000000 +0000
@@ -33,7 +33,7 @@
 
 override_dh_auto_test:
 ifeq (,$(filter nocheck,$(DEB_BUILD_OPTIONS)))
-	make check-headless
+	env LIBGL_ALWAYS_SOFTWARE=1 make check-headless
 endif
 
 override_dh_gencontrol: