document conda_install_tool and conda_solver too

Author: jaimergp

src/maintainer/conda_forge_yml.rst

@@ -31,7 +31,10 @@ Top-level fields
 * :ref:`choco`
 * :ref:`circle`
 * :ref:`conda_build`
+* :ref:`conda_build_tool`
 * :ref:`conda_forge_output_validation`
+* :ref:`conda_install_tool`
+* :ref:`conda_solver`
 * :ref:`docker`
 * :ref:`github`
 * :ref:`idle_timeout_minutes`
@@ -268,7 +271,7 @@ conda_build_tool
 
 Use this option to choose which tool is used to build your recipe. Currently allowed options are:
 
-- ``conda-build``: Vanilla ``conda build ...`` with no explicit solver configuration. Note that it will still respect the value configured in ``conda_solver``, if any.
+- ``conda-build``: Vanilla ``conda build ...`` with no explicit solver configuration. Note that it will still respect the value configured in :ref:`conda_solver`, if any.
 - ``conda-build+classic``: ``conda build ...`` with the ``classic`` solver enforced.
 - ``conda-build+conda-libmamba-solver``: ``conda build ...`` with the ``conda-libmamba-solver`` solver enforced.
 - ``mambabuild``: ``conda mambabuild ...`` as provided by ``boa``.
@@ -282,6 +285,25 @@ This field must be set to ``True`` for feedstocks in the ``conda-forge`` GitHub
 organization. It enables the required feedstock artifact validation as described
 in :ref:`output_validation`.
 
+.. _conda_install_tool:
+
+conda_install_tool
+------------------
+
+Use this option to choose which tool is used to provision the tooling in your feedstock. 
+Currently allowed options are:
+
+- ``conda``: Vanilla ``conda install ...`` with no explicit solver configuration. Note that it will still respect the value configured in :ref:`conda_solver`, if any.
+- ``mamba``: ``mamba install ...`` as provided by the `mamba project <https://github.com/mamba-org/mamba>`__. ``conda_solver`` has no effect here.
+
+.. _conda_solver:
+
+conda_solver
+------------
+
+Choose which ``conda`` solver plugin to use for feedstock builds.
+The default is ``libmamba``. Other values include ``classic``.
+
 .. _docker:
 
 docker