DOC: BLD: remove graphviz dependency of neps doc build. Closes gh-11617

5 files changed, 4 insertions, 29 deletions

diff --git a/doc/neps/_static/nep0013_image1.png b/doc/neps/_static/nep0013_image1.png
new file mode 100644
index 000000000..e1b35b738
--- /dev/null
+++ b/doc/neps/_static/nep0013_image1.png
diff --git a/doc/neps/_static/nep0013_image2.png b/doc/neps/_static/nep0013_image2.png
new file mode 100644
index 000000000..99f51b2fa
--- /dev/null
+++ b/doc/neps/_static/nep0013_image2.png
diff --git a/doc/neps/_static/nep0013_image3.png b/doc/neps/_static/nep0013_image3.png
new file mode 100644
index 000000000..87a354ad1
--- /dev/null
+++ b/doc/neps/_static/nep0013_image3.png
diff --git a/doc/neps/conf.py b/doc/neps/conf.py
index 8cfb2b570..bd7503781 100644
--- a/doc/neps/conf.py
+++ b/doc/neps/conf.py
@@ -30,8 +30,7 @@ import os
 # Add any Sphinx extension module names here, as strings. They can be
 # extensions coming with Sphinx (named 'sphinx.ext.*') or your custom
 # ones.
-extensions = ['sphinx.ext.imgmath',
-              'sphinx.ext.graphviz']
+extensions = ['sphinx.ext.imgmath',]
 
 # Add any paths that contain templates here, relative to this directory.
 templates_path = ['../source/_templates/']
diff --git a/doc/neps/nep-0013-ufunc-overrides.rst b/doc/neps/nep-0013-ufunc-overrides.rst
index a51ce3927..0888c7559 100644
--- a/doc/neps/nep-0013-ufunc-overrides.rst
+++ b/doc/neps/nep-0013-ufunc-overrides.rst
@@ -261,16 +261,7 @@ consider carefully if any surprising behavior results.
 
    Type casting hierarchy.
 
-   .. graphviz::
-
-      digraph array_ufuncs {
-         rankdir=BT;
-         A -> C [label="C"];
-         B -> C [label="C"];
-         D -> B [label="B"];
-         ndarray -> C [label="A"];
-         ndarray -> B [label="B"];
-      }
+   .. image:: _static/nep0013_image1.png
 
    The ``__array_ufunc__`` of type A can handle ndarrays returning C,
    B can handle ndarray and D returning B, and C can handle A and B returning C,
@@ -286,14 +277,7 @@ consider carefully if any surprising behavior results.
 
    One-cycle in the ``__array_ufunc__`` graph.
 
-   .. graphviz::
-
-      digraph array_ufuncs {
-         rankdir=BT;
-         A -> B [label="B"];
-         B -> A [label="A"];
-      }
-
+   .. image:: _static/nep0013_image2.png
 
    In this case, the ``__array_ufunc__`` relations have a cycle of length 1,
    and a type casting hierarchy does not exist. Binary operations are not
@@ -303,15 +287,7 @@ consider carefully if any surprising behavior results.
 
    Longer cycle in the ``__array_ufunc__`` graph.
 
-   .. graphviz::
-
-      digraph array_ufuncs {
-         rankdir=BT;
-         A -> B [label="B"];
-         B -> C [label="C"];
-         C -> A [label="A"];
-      }
-
+   .. image:: _static/nep0013_image3.png
 
    In this case, the ``__array_ufunc__`` relations have a longer cycle, and a
    type casting hierarchy does not exist. Binary operations are still