IPython currently incompatible with pytest 7

.github/workflows/downstream.yml

@@ -41,7 +41,7 b' jobs:'
         python -m pip install --upgrade -e file://$PWD#egg=ipython[test]
         # we must instal IPython after ipykernel to get the right versions.
         python -m pip install --upgrade --upgrade-strategy eager flaky ipyparallel
-        python -m pip install --upgrade pytest 
+        python -m pip install --upgrade 'pytest<7' 
     - name: pytest
       env:
         COLUMNS: 120

docs/requirements.txt

@@ -6,4 +6,4 b' sphinx-rtd-theme'
 docrepr
 matplotlib
 stack_data
-pytest
+pytest<7

setup.cfg

@@ -63,7 +63,7 b' qtconsole ='
     qtconsole
 terminal =
 test =
-    pytest
+    pytest<7
     pytest-asyncio
     testpath
 test_extra =
@@ -72,7 +72,7 b' test_extra ='
     nbformat
     numpy>=1.19
     pandas
-    pytest
+    pytest<7
     testpath
     trio
 all =