Conditional PyYAML dependency for atest

pekkaklarck · pekkaklarck · commit 971a569eb08d · 2020-01-08T18:44:12.000+02:00
diff --git a/atest/requirements.txt b/atest/requirements.txt
@@ -1,12 +1,17 @@
 # External Python modules required by acceptance tests.
 # See atest/README.rst for more information.
 
-docutils >= 0.9; platform_python_implementation != 'IronPython'  # https://github.com/IronLanguages/ironpython2/issues/113
-pygments
-pyyaml
 enum34; python_version < '3.0'
 pillow; platform_system == 'Windows'
 
+# https://github.com/IronLanguages/ironpython2/issues/113
+docutils >= 0.9; platform_python_implementation != 'IronPython'
+pygments; platform_python_implementation != 'IronPython'
+
+# https://github.com/yaml/pyyaml/issues/369
+pyyaml; platform_python_implementation != 'Jython'
+pyyaml==5.2; platform_python_implementation == 'Jython'
+
 # On Linux installing lxml with pip may require compilation and development
 # headers. Alternatively it can be installed using a package manager like
 # `sudo apt-get install python-lxml`.
