diff --git a/Coriolis/__init__.py b/Coriolis/__init__.py
new file mode 100644
index 00000000..3e8ca850
--- /dev/null
+++ b/Coriolis/__init__.py
@@ -0,0 +1,7 @@
+#This is needed for poetry to recognise the top level module
+import os
+
+__all__ = ["crlcore"]
+coriolis_package_dir = os.path.abspath(os.path.dirname(__file__))
+
+os.environ["CORIOLIS_TOP"] = coriolis_package_dir