@@ -238,7 +238,9 @@ function setup_package_with_req_sync {

     if [ -n "$REQUIREMENTS_DIR" ]; then

         # Constrain this package to this project directory from here on out.

         local name=$(awk '/^name.*=/ {print $3}' $project_dir/setup.cfg)

-        $REQUIREMENTS_DIR/.venv/bin/edit-constraints $REQUIREMENTS_DIR/upper-constraints.txt -- $name "$flags $project_dir"

+        $REQUIREMENTS_DIR/.venv/bin/edit-constraints \

+            $REQUIREMENTS_DIR/upper-constraints.txt -- $name \

+            "$flags file://$project_dir#egg=$name"

     fi

     setup_package $project_dir $flags