docs: added snippet on how to use latex

docs/tips/index.rst

@@ -31,3 +31,27 @@ This behaviour can be disabled with
 .. code-block:: bash
 
    conda config --set changeps1 no
+
+
+-----------
+Using LaTeX
+-----------
+
+The LSCSoft Conda environments do not provide (La)TeX.
+You should install TeX using your system package manager, see below for
+details for some common operating systems:
+
+.. note::
+
+   The following examples should get you far enough to use TeX with
+   the Matplotlib Python library.  If you find that other packages
+   are needed, please
+   `open a Bug ticket https://git.ligo.org/lscsoft/conda/issues/new?issuable_template=Bug>`_.
+
+^^^^^^^^
+Macports
+^^^^^^^^
+
+.. code-block:: bash
+
+   port install texlive dvipng