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@@ -0,0 +1,111 @@
+============
+Installation
+============
+
+This are the instructions to install Libervia (SàT) using Python.
+Note that if you are using GNU/Linux, Libervia may already be present on your distribution.
+
+Libervia is a Salut à Toi frontend, the SàT backend must be installed first (if you
+haven't installed it yet, it will be downloaded automatically as it is a dependency of
+Libervia). Libervia and SàT backend must always have the same version (Libervia won't
+start if the version backend has not the same version).
+
+We recommend to use development version for now, until the release of
+0.7 version which will be "general public" version.
+
+Also note that Libervia as all SàT ecosystem is still using Python 2 (this will change for
+0.8 version which will be Python 3 only), so all instructions below have to be made using
+python 2.
+
+Development Version
+-------------------
+
+*Note for Arch users: a pkgbuild is available for your distribution on
+AUR, check sat-libervia-hg (as well as other sat-\* packages).*
+
+You can install the latest development version using pip. Please check backend documentation
+to see the system dependencies needed.
+
+You can use the same virtual environment as the one used for installing the backend. If
+you haven't installed it yet, just select a location when you want to install it, for
+instance your home directory::
+
+  $ cd
+
+And enter the following commands (note that *virtualenv2* may be named
+*virtualenv* on some distributions, just be sure it's Python **2** version)::
+
+  $ virtualenv2 env
+  $ source env/bin/activate
+  $ pip install hg+https://repos.goffi.org/libervia
+
+If you haven't done it for the backend, you need to install the media::
+
+  $ cd
+  $ hg clone https://repos.goffi.org/sat_media
+
+Post Installation
+-----------------
+
+Libervia uses its own XMPP account to fetch public data. You need to create a profile
+named `libervia` linked to this account to launch Libervia. First create an account
+dedicated to this on your XMPP server. For instance with `Prosody`_ you would enter
+something like::
+
+  $ prosodyctl adduser libervia@example.net
+
+Where you'll obviously change ``libervia@example.net`` for the JID you want to use, with
+your domain name. You'll then be prompted for a password. You can now create the
+associated SàT profile::
+
+  $ jp profile create libervia -j libervia@example.net -p <libervia_password>
+
+.. note::
+
+   jp doesn't prompt for password yet, this means that the password is visible to anybody
+   looking at your screen and will stay in your shell history, and the password will be
+   visible for a few seconds in process list. If this is a concern for you (e.g. you use a
+   shared machine), use an other frontend to create the profile, or do the necessary to
+   remove the password from history.
+
+Finally, you need to specify to specify the password of this ``libervia`` profile in your
+configuration. To do so, edit your ``sat.conf`` and edit ``[libervia]`` and set the
+``passphrase`` option to the profile password you have used in the command above:
+
+.. sourcecode:: cfg
+
+    [libervia]
+    passphrase = <libervia_password>
+
+You should now be good to run the Libervia server.
+
+.. _Prosody: https://prosody.im
+
+
+Usage
+=====
+
+To launch the Libervia server, enter::
+
+  $ libervia
+
+…or, if you want to launch it in foreground::
+
+  $ libervia fg
+
+You can stop it with::
+
+  $ libervia stop
+
+To know if backend is launched or not::
+
+  $ libervia status
+
+
+SàT Pubsub
+==========
+
+Some functionalities use advanced or experimental features of XMPP PubSub. We recommend to
+use the SàT PubSub service that is a side project developed for the needs of Salut à Toi,
+and consequently implements everything needed. Please refer to SàT PubSub documentation to
+know how to install and use it.