+ ndisc6 python python-pyopenssl openssl \
+ python-pyparsing python-simplejson \
+ python-pyinotify python-pycurl socat
+
+If you want to also enable the `htools` components, which is recommended
+on bigger deployments (they give you automatic instance placement,
+cluster balancing, etc.), then you need to have a Haskell compiler
+installed. More specifically:
+
+- `GHC <http://www.haskell.org/ghc/>`_ version 6.10 or higher
+- or even better, `The Haskell Platform
+ <http://hackage.haskell.org/platform/>`_ which gives you a simple way
+ to bootstrap Haskell
+- `json <http://hackage.haskell.org/package/json>`_, a JSON library
+- `network <http://hackage.haskell.org/package/network>`_, a basic
+ network library
+- `parallel <http://hackage.haskell.org/package/parallel>`_, a parallel
+ programming library (note: tested with up to version 3.x)
+- `curl <http://hackage.haskell.org/package/curl>`_, bindings for the
+ curl library, only needed if you want these tools to connect to remote
+ clusters (as opposed to the local one)
+
+All of these are also available as package in Debian/Ubuntu::
+
+ $ apt-get install ghc6 libghc6-json-dev libghc6-network-dev \
+ libghc6-parallel-dev libghc6-curl-dev
+
+Note that more recent version have switched to GHC 7.x and the packages
+were renamed::
+
+ $ apt-get install ghc libghc-json-dev libghc-network-dev \
+ libghc-parallel-dev libghc-curl-dev
+
+The compilation of the htools components is automatically enabled when
+the compiler and the requisite libraries are found. You can use the
+``--enable-htools`` configure flag to force the selection (at which
+point ``./configure`` will fail if it doesn't find the prerequisites).