From 7e1371c14d2220565a4ad9369813687cc662a068 Mon Sep 17 00:00:00 2001
From: Jan Petykiewicz <jan@mpxd.net>
Date: Wed, 4 Jan 2023 22:26:21 -0800
Subject: [PATCH] add notes about what is hard

---
 README.md | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/README.md b/README.md
index 128a8c5..140bd2c 100644
--- a/README.md
+++ b/README.md
@@ -49,3 +49,9 @@ pip3 install git+https://mpxd.net/code/jan/masque.git@release
     - boolean ops
 * Construct polygons from bitmap using `skimage.find_contours`
 * Deal with shape repetitions for dxf, svg
+
+* this approach has an issue: how add devices together?
+   - need to add the other device by name
+   - need to know the other device's ports
+   - 
+   - also: device doesn't know its own name, can't wrap itself into a subpattern