Merge pull request #1393 from compas-dev/docs-rhino8-install

Update Rhino 8 installation instructions

Author: tomvanmele

docs/userguide/cad.rhino8.rst

@@ -1,57 +1,63 @@
 ********************************************************************************
-Working in Rhino 8
+Working in Rhino 8 (with CPython)
 ********************************************************************************
 
 .. warning::
 
-    Support for the new Rhino 8 ScriptEditor is experimental.
+    Support for the new Rhino 8 Script Editor is experimental.
 
-.. note::
 
-    The installation procedures listed here are for using COMPAS with CPython in Rhino 8.
-    For using COMPAS with IronPython in Rhino 8, see :doc:`/userguide/cad.rhino`.
+Rhino 8 supports both CPython and IronPython.
+The instructions on this page are for working with COMPAS in the new Script Editor using CPython.
+More information about the Script Editor is available here: <https://www.rhino3d.com/features/developer/scripting/>
+
+For working with COMPAS in Rhino 8 with IronPython,
+or for information about working in earlier versions of Rhino, see :doc:`/userguide/cad.rhino`.
 
+.. note::
+
+    To launch Rhino 8 Script Editor, simply type `ScriptEditor` at the Rhino 8 command prompt.
 
 Installation
 ============
 
-Rhino 8 comes with its own CPython executable (Python 3.9).
-This procedure simply uses that executable and its associated ``pip`` to install COMPAS.
-The location of the executable is different on different platforms.
+To use COMPAS packages in your Rhino 8 CPython scripts,
+you can now simply add the packages as requirements in a comment.
 
-* Windows: ``%USERPROFILE%\.rhinocode\py39-rh8\python.exe``
-* macOS: ``~/.rhinocode/py39-rh8/python3.9``
+.. code-block:: python
 
-.. note::
+    #! python3
+    # r: compas
 
-    If you already have an installation of COMPAS on your system, you can try finding the Rhino 8 Python executable by running the following in a terminal or command prompt:
+    import compas
+    from compas.datastructures import Mesh
 
-    .. code-block:: bash
+    mesh = ...
 
-        python -m compas_rhino.print_python_path
+More information is available here: <https://developer.rhino3d.com/guides/scripting/scripting-command>
 
-Update `pip`
-~~~~~~~~~~~~
 
-Before installing `compas` with `pip`, it is highly recommended that you update `pip` itself.
+Alternative Method
+==================
 
-.. code-block:: bash
+The above method only works if the package you want to install is available on `PyPI <https://pypi.org/>`_.
+If you want to install a package from local source,
+you can use `pip` directly in combination with the Python executable that is included in Rhino.
+The default location of the executable is different for Windows and Mac.
 
-    $ ~/.rhinocode/py39-rh8/python3.9 -m pip install --upgrade pip
+* Windows: ``%USERPROFILE%\.rhinocode\py39-rh8\python.exe``
+* macOS: ``~/.rhinocode/py39-rh8/python3.9``
 
+.. code-block:: bash
 
-Install from PyPI
-~~~~~~~~~~~~~~~~~
+    $ cd path/to/compas
+    $ ~/.rhinocode/py39-rh8/python3.9 -m pip install .
 
-For example on Mac:
+To create an editable install, you should update `pip` itself, first.
 
 .. code-block:: bash
 
-    $ ~/.rhinocode/py39-rh8/python3.9 -m pip install compas
-
-
-Install from Source
-~~~~~~~~~~~~~~~~~~~
+    $ ~/.rhinocode/py39-rh8/python3.9 -m pip install --upgrade pip
 
 .. code-block:: bash