diff --git a/Packaging.md b/Packaging.md
index 5530f00..52c2843 100644
--- a/Packaging.md
+++ b/Packaging.md
@@ -14,6 +14,9 @@ For libraries that Tahoe uses, we have these desiderata:
 
  * Make it convenient for someone to use other versions of the packages that we use e.g. system-wide packages or newer or alternate versions, etc..
 
+ * Bundle required libraries with the Tahoe distribution so that if someone downloads the distribution, moves to a desert island without a net connection, and then installs, it works.
+
+
 ## setuptools
 
 One option is to use a Python packaging tool named [setuptools](http://cheeseshop.python.org/pypi/setuptools).