restore CI version of arraycontext

.github/workflows/ci.yml

@@ -116,6 +116,9 @@ jobs:
 
                 cd "$DOWNSTREAM_PROJECT"
                 echo "*** $DOWNSTREAM_PROJECT version: $(git rev-parse --short HEAD)"
+                
+                # Use this version of arraycontext instead of what downstream would install
+                sed -i "/egg=arraycontext/ c git+file://$(readlink -f ..)#egg=arraycontext" requirements.txt
 
                 # Avoid slow or complicated tests in downstream projects
                 export PYTEST_ADDOPTS="-k 'not (slowtest or octave or mpi)'"