--- a/provision_xenial64.sh	Sat Dec 16 13:41:40 2017 +0100
+++ b/provision_xenial64.sh	Sat Dec 16 17:27:00 2017 +0100
@@ -21,11 +21,12 @@
      mercurial       \
      mingw-w64       \
      nsis            \
+     swig            \
      texinfo         \
      unrar           \
+     unzip           \
      wget            \
-     xvfb            \
-     unzip
+     xvfb
 
      echo ttf-mscorefonts-installer msttcorefonts/accepted-mscorefonts-eula select true | debconf-set-selections
      echo ttf-mscorefonts-installer msttcorefonts/present-mscorefonts-eula note | debconf-set-selections