diff --git a/makefile b/makefile
--- a/makefile
+++ b/makefile
@@ -67,6 +67,11 @@ push_github:
 pull_github:
 	hg pull git+ssh://git@github.com/drewp/light9.git
 
+pydeps:
+	echo make sure src/light9/all_deps.py depends on all toplevel tools
+	pdm run pydeps --only=light9 --reverse --rankdir=BT --max-bacon=0 -o=work/2024/pydeps_output.svg --no-show -T=svg src/light9/all_deps.py
+	echo wrote https://bigasterisk.com/light9/work/2024/pydeps_output.svg
+	
 ### show ###
 
 qlc_artnet_dmx_proxy:
diff --git a/src/light9/all_deps.py b/src/light9/all_deps.py
new file mode 100644
--- /dev/null
+++ b/src/light9/all_deps.py
@@ -0,0 +1,10 @@
+# depends on the modules used in bin/
+
+from light9 import showconfig
+from light9.ascoltami.playlist import Playlist
+import light9.homepage.write_config
+import light9.midifade.midifade
+import light9.ascoltami.main
+import light9.collector.service
+import light9.effect.sequencer.service
+import light9.rdfdb.service