diff --git a/.travis-ci.sh b/.travis-ci.sh
index 5886e5d..bf192a6 100755
--- a/.travis-ci.sh
+++ b/.travis-ci.sh
@@ -1,19 +1,66 @@
+#!/bin/bash -ex
 # OPAM packages needed to build tests.
-OPAM_PACKAGES="uuidm re uri cohttp ssl lwt cstruct oasis"
 
+function setup_arm_chroot {
+  echo Setting up qemu chroot for ARM
+  sudo apt-get install -qq debootstrap qemu-user-static binfmt-support sbuild
+  df -h
+  DIR=/arm-chroot
+  MIRROR=http://ftp.us.debian.org/debian/
+  sudo mkdir $DIR
+  sudo debootstrap --variant=buildd --include=fakeroot,build-essential --arch=armel --foreign wheezy $DIR $MIRROR
+  sudo cp /usr/bin/qemu-arm-static $DIR/usr/bin/
+  sudo chroot $DIR ./debootstrap/debootstrap --second-stage
+  sudo sbuild-createchroot --arch=armel --foreign --setup-only wheezy $DIR $MIRROR
+  echo export OCAML_VERSION=$OCAML_VERSION > envvars.sh
+  echo export OPAM_VERSION=$OPAM_VERSION >> envvars.sh
+  echo export XARCH=$XARCH >> envvars.sh
+  echo export LANG=c >> envvars.sh
+  echo export OPAMYES=1 >> envvars.sh
+  echo export OPAMVERBOSE=1 >> envvars.sh
+  echo export TRAVIS_BUILD_DIR=$TRAVIS_BUILD_DIR >> envvars.sh
+  chmod a+x envvars.sh
+  export LANG=c
+  sudo chroot $DIR apt-get --allow-unauthenticated install -y debian-archive-keyring build-essential m4 git curl sudo
+  # Add GPG key for anil@recoil.org which the ARM OPAM repo is signed with
+  sudo chroot $DIR apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 5896E99F
+  echo 'deb [arch=armel] http://www.recoil.org/~avsm/debian-arm wheezy main' > /tmp/opamapt
+  sudo mv /tmp/opamapt $DIR/etc/apt/sources.list.d/opam.list
+  sudo chroot $DIR apt-get update
+  sudo mkdir -p $DIR/$TRAVIS_BUILD_DIR
+  echo sync:
+  sudo rsync -av $TRAVIS_BUILD_DIR/ $DIR/$TRAVIS_BUILD_DIR/
+  echo debug:
+  ls -la $DIR/$TRAVIS_BUILD_DIR
+  sudo touch $DIR/.chroot_is_done
+  sudo chroot $DIR bash -c "cd $TRAVIS_BUILD_DIR && ./.travis-ci.sh"
+  exit 0
+} 
 
-case "$OCAML_VERSION,$OPAM_VERSION" in
-3.12.1,1.0.0) ppa=avsm/ocaml312+opam10 ;;
-3.12.1,1.1.0) ppa=avsm/ocaml312+opam11 ;;
-4.00.1,1.0.0) ppa=avsm/ocaml40+opam10 ;;
-4.00.1,1.1.0) ppa=avsm/ocaml40+opam11 ;;
-4.01.0,1.0.0) ppa=avsm/ocaml41+opam10 ;;
-4.01.0,1.1.0) ppa=avsm/ocaml41+opam11 ;;
-*) echo Unknown $OCAML_VERSION,$OPAM_VERSION; exit 1 ;;
-esac
+if [ -e "/.chroot_is_done" ]; then
+  # we are in the arm chroot
+  # get environment variable for inside chroot
+  . ./envvars.sh
+else
+  if [ "$XARCH" = "arm" ]; then
+    setup_arm_chroot
+  else
+    case "$OCAML_VERSION,$OPAM_VERSION" in
+    3.12.1,1.0.0) ppa=avsm/ocaml312+opam10 ;;
+    3.12.1,1.1.0) ppa=avsm/ocaml312+opam11 ;;
+    4.00.1,1.0.0) ppa=avsm/ocaml40+opam10 ;;
+    4.00.1,1.1.0) ppa=avsm/ocaml40+opam11 ;;
+    4.01.0,1.0.0) ppa=avsm/ocaml41+opam10 ;;
+    4.01.0,1.1.0) ppa=avsm/ocaml41+opam11 ;;
+    4.01.0,1.2.0) ppa=avsm/ocaml41+opam12 ;;
+    4.02.0,1.2.0) ppa=avsm/ocaml42+opam12 ;;
+    *) echo Unknown $OCAML_VERSION,$OPAM_VERSION; exit 1 ;;
+    esac
+    echo "yes" | sudo add-apt-repository ppa:$ppa
+    sudo apt-get update -qq
+  fi
+fi
 
-echo "yes" | sudo add-apt-repository ppa:$ppa
-sudo apt-get update -qq
 sudo apt-get install -qq ocaml ocaml-native-compilers camlp4-extra opam
 export OPAMYES=1
 export OPAMVERBOSE=1
@@ -24,7 +71,7 @@ opam --version
 opam --git-version
 
 opam init 
-opam install ${OPAM_PACKAGES}
+eval `opam config env`
+opam pin add xe .
 
-eval `opam config -env`
 make
diff --git a/.travis.yml b/.travis.yml
index 1957db9..4377978 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,4 +1,5 @@
 language: c
 script: bash -ex .travis-ci.sh
 env:
-  - OCAML_VERSION=4.01.0 OPAM_VERSION=1.1.0
+  - OCAML_VERSION=4.01.0 MIRAGE_BACKEND=unix OPAM_VERSION=1.2.0
+  - OCAML_VERSION=4.02.0 MIRAGE_BACKEND=unix OPAM_VERSION=1.2.0
diff --git a/opam b/opam
new file mode 100644
index 0000000..b47f6be
--- /dev/null
+++ b/opam
@@ -0,0 +1,23 @@
+opam-version: "1"
+maintainer: "dave.scott@citrix.com"
+tags: [
+  "org:xapi-project"
+]
+build: [
+  [make]
+  [make "install" "BINDIR=%{bin}%"]
+]
+remove: [
+  [make "uninstall" "BINDIR=%{bin}%"]
+]
+depends: [
+  "cstruct" {>= "0.6.0"}
+  "oasis"
+  "lwt"
+  "ocamlfind"
+  "cohttp" {>= "0.14.0"}
+  "ssl"
+  "re"
+  "uri"
+  "uuidm"
+]