Simplify installing requirements.

docs/rst/installation.rst

@@ -15,9 +15,7 @@ Prerequisites:
 * `setuptools 20.0.0+ <https://pypi.python.org/pypi/setuptools>`_
 
 Ansible Container relies upon supported container engines for building, running,
-and deploying your project. When you install Ansible Container, you must
-specify which engines you want your installation to support. Currently supported
-engines are:
+and deploying your project. Currently supported engines are:
 
 * ``docker`` - The `Docker Engine <https://docs.docker.com/engine/installation/>`_
 * ``k8s`` - `Kubernetes <https://kubernetes.io/docs/setup/pick-right-solution/>`_, on a
@@ -27,22 +25,19 @@ engines are:
   on a remote service or in a local installation using
   `MiniShift <https://www.openshift.org/minishift/>`_
 
-Specify the engines you wish supported by listing them comma separated in square
-brackets as part of your ``pip install`` command. For example, if you intended to
-use Docker for local container development but deploy your project into Kubernetes,
-you would want to install the ``docker`` and ``k8s`` engines like so:
+The simplest way to install Ansible Container is with the ``pip`` command, such as:
 
 .. code-block:: console
 
-    $ sudo pip install ansible-container[docker,k8s]
+    $ sudo pip install ansible-container
 
 If you do not have root privileges, you'll need to use a ``virtualenv`` to create a Python sandbox:
 
 .. code-block:: console
 
     $ virtualenv venv
     $ source venv/bin/activate
-    $ pip install ansible-container[docker,openshift]
+    $ pip install ansible-container
 
 You'll need to run the ``activate`` script in each shell session prior to invoking ``ansible-container``.
 See `the virtualenv docs <https://virtualenv.pypa.io/en/stable/>`_ for details.
@@ -69,13 +64,12 @@ Clone the repo:
 We recommend that you use a Python Virtualenv to sandbox your installation.
 See `the virtualenv docs <https://virtualenv.pypa.io/en/stable/>`_ for instructions.
 
-Then, again specifying in square-brackets the engines you wish installed, use
-pip to install the cloned code:
+It's again best to use ``pip`` to install the cloned code:
 
 .. code-block:: console
 
     $ cd ansible-container
-    $ pip install -e .[docker,openshift]
+    $ pip install -e .
 
 If you run into the following error, you likely have an older version of setuptools installed:
 

requirements.txt

@@ -6,3 +6,5 @@ ruamel.yaml>=0.15.34
 six>=1.10
 structlog[dev]>=16.1
 jsonschema==2.6.0
+docker>=2.4.0,<3.0
+openshift==0.3.4

setup.py

@@ -85,13 +85,13 @@ def run(self):
             'ansible>=2.3.0',
             'pytest>=3',
             'docker>=2.4.0,<3.0',
-            'jmespath>=0.9'
+            'openshift==0.3.4',
         ],
         extras_require={
-            'docker': ['docker>=2.4.0,<3.0'],
+            'docker': [],
             'docbuild': ['Sphinx>=1.5.0'],
-            'openshift': ['openshift==0.3.4'],
-            'k8s': ['openshift==0.3.4']
+            'openshift': [],
+            'k8s': []
         },
         #dependency_links=[
         #    'https://github.com/ansible/ansible/archive/devel.tar.gz#egg=ansible-2.4.0',