README: mention Numpy dependency.

diff --git a/README b/README
index 2f7a6049f98af3927348517582027ed9cf252d3a..bfe78fd6e70c4c6ac42bad85d9fd4377ec378e6a 100644 (file)
--- a/README
+++ b/README
@@ -23,12 +23,22 @@ my `wtk overlay`_.  Install with::
 Dependencies
 ------------
 
-``pygrader`` is a simple package.  The only external dependency
-outside the Python 3 standard library is my `pgp-mime`_ package.
+If you're installing by hand or packaging pycomedi for another
+distribution, you'll need the following dependencies:
+
+========   ===================  ================  =========================
+Package    Purpose              Debian_           Gentoo_
+========   ===================  ================  =========================
+NumPy_     statistics           python-numpy      dev-python/numpy
+pgp-mime_  secure email                           dev-python/pgp-mime [#pm]
+nose_      testing (optional)   python-nose       dev-python/nose
+=========  ===================  ================  =========================
 
 If you are developing ``pygrader``, you can use `update-copyright`_ to
 keep the copyright blurbs up to date.
 
+.. [#pm] In the `wtk overlay`_.
+
 Installing by hand
 ------------------
 
@@ -306,6 +316,9 @@ using graphical interfaces.
 .. _Gentoo: http://www.gentoo.org/
 .. _layman: http://layman.sourceforge.net/
 .. _wtk overlay: http://blog.tremily.us/posts/Gentoo_overlay/
+.. _Debian: http://www.debian.org/
+.. _Gentoo: http://www.gentoo.org/
+.. _NumPy: http://numpy.scipy.org/
 .. _pgp-mime: http://blog.tremily.us/posts/pgp-mime/
 .. _update-copyright: http://blog.tremily.us/posts/update-copyright/
 .. _Git: http://git-scm.com/