Add -pyyaml patch to fix FTBFS.

python-networkx-pyyaml.patch

@@ -0,0 +1,9 @@
+--- networkx/readwrite/nx_yaml.py.orig	2020-08-22 14:01:28.000000000 -0600
++++ networkx/readwrite/nx_yaml.py	2021-01-26 10:02:43.555537204 -0700
+@@ -88,5 +88,5 @@ def read_yaml(path):
+     except ImportError as e:
+         raise ImportError("read_yaml() requires PyYAML: http://pyyaml.org/") from e
+ 
+-    G = yaml.load(path, Loader=yaml.FullLoader)
++    G = yaml.load(path, Loader=yaml.Loader)
+     return G

python-networkx.spec

@@ -2,13 +2,16 @@
 
 Name:           python-%{srcname}
 Version:        2.5
-Release:        2%{?dist}
+Release:        3%{?dist}
 Summary:        Creates and Manipulates Graphs and Networks
 License:        BSD
 URL:            http://networkx.github.io/
 Source0:        https://github.com/networkx/networkx/archive/%{srcname}-%{version}.tar.gz
 # The football example requires network access, so expect it to fail.
 Patch0:         %{name}-doc.patch
+# PyYAML 5.4+ breaks reading yaml files
+# https://github.com/networkx/networkx/commit/a6dd458a12ad8db161271e2271644803d4f29a96
+Patch1:         %{name}-pyyaml.patch
 
 BuildArch:      noarch
 
@@ -98,8 +101,8 @@ for f in $(grep -FRl %{_bindir}/env .); do
 done
 
 # Use local objects.inv for intersphinx
-sed -e "s|'https://docs\.python\.org/2/': None|'https://docs.python.org/': '%{_docdir}/python3-docs/html/objects.inv'|" \
-    -e "s|\('https://docs\.scipy\.org/doc/numpy/': \)None|\1'%{_docdir}/python3-numpy-doc/objects.inv'|" \
+sed -e 's|\("https://docs\.python\.org/3/": \)None|\1"%{_docdir}/python3-docs/html/objects.inv"|' \
+    -e 's|\("https://numpy\.org/doc/stable/": \)None|\1"%{_docdir}/python3-numpy-doc/objects.inv"|' \
     -i doc/conf.py
 
 %build
@@ -146,6 +149,9 @@ pytest
 %endif
 
 %changelog
+* Tue Jan 26 2021 Jerry James <loganjerry@gmail.com> - 2.5-3
+- Add -pyyaml patch to fix FTBFS
+
 * Fri Dec 11 2020 Petr Lautrbach <plautrba@redhat.com> - 2.5-2
 - Limit BuildRequires to necessary minimum in Red Hat Enterprise Linux
 - Skip pytest in Red Hat Enterprise Linux