diff --git a/config/Pmodules.yaml b/config/Pmodules.yaml
new file mode 100644
index 0000000..43ca4f8
--- /dev/null
+++ b/config/Pmodules.yaml
@@ -0,0 +1,7 @@
+DefaultGroups: Tools:Programming
+DefaultReleaseStages: stable
+ReleaseStages: unstable:stable:deprecated
+
+Overlays:
+  base:
+    install_root: @INSTALL_ROOT@