===================
 Development setup
===================


RhodeCode Enterprise runs inside a Nix managed environment. This ensures build
environment dependencies are correctly declared and installed during setup.
It also enables atomic upgrades, rollbacks, and multiple instances of RhodeCode
Enterprise for efficient cluster management.

To set up RhodeCode Enterprise inside the Nix environment use the following steps:



Setup Nix Package Manager
-------------------------

To install the Nix Package Manager please run::

   $ curl https://nixos.org/nix/install | sh

or go to https://nixos.org/nix/ and follow their installation instructions.
Once this is correctly set up on your system you should be able to use the
following commands:

* `nix-env`

* `nix-shell`


.. tip::

   Update your channels frequently by running ``nix-channel --upgrade``.


Switch nix to latest STABLE channel
-----------------------------------

run::

   nix-channel --add https://nixos.org/channels/nixos-16.03 nixpkgs

Followed by::

   nix-channel --update


Clone the required repositories
-------------------------------

After Nix is set up, clone the RhodeCode Enterprise Community Edition, and
RhodeCode VCSServer repositories into the same directory.
To do this, use the following example::

    mkdir rhodecode-develop && cd rhodecode-develop
    hg clone https://code.rhodecode.com/rhodecode-enterprise-ce
    hg clone https://code.rhodecode.com/rhodecode-vcsserver

.. note::

   If you cannot clone the repository, please request read permissions.



Enter the Development Shell
---------------------------

The final step is to start into the development shell. To do this run the
following command from inside the cloned repository::

   cd ~/rhodecode-enterprise-ce
   nix-shell --arg dev true

.. note::

   On the first run, this will take a while to download and optionally compile
   a few things. The next runs of it will be faster.



Creating a Development Configuration
------------------------------------

To create a development environment for RhodeCode Enterprise,
use the following steps:

1. Create a copy of `~/rhodecode-enterprise-ce/configs/development.ini`
2. Adjust the configuration settings to your needs

   .. note::

      It is recommended to call it `dev.ini`.


Setup the Development Database
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

To create a development database use the following example. This is a one
time operation::

    paster setup-rhodecode dev.ini \
        --user=admin --password=secret \
        --email=admin@example.com \
        --repos=~/my_dev_repos


Start the Development Server
^^^^^^^^^^^^^^^^^^^^^^^^^^^^

When starting the development server, you should start the vcsserver as a
separate process. To do this use one of the following examples:

1. Set the `start.vcs_server` flag in the ``dev.ini`` file to true. For example:

   .. code-block:: python

      ### VCS CONFIG ###
      ##################
      vcs.start_server = true
      vcs.server = localhost:9900
      vcs.server.log_level = debug

   Then start the server using the following command: ``rcserver dev.ini``

2. Start the development server using the following example::

      rcserver --with-vcsserver dev.ini

3. Start the development server in a different terminal using the following
   example::

      vcsserver


Run the Environment Tests
^^^^^^^^^^^^^^^^^^^^^^^^^

Please make sure that the test are passing to verify that your environment is
set up correctly. More details about the tests are described in:
:file:`/docs/dev/testing`.