Archive type for PYZ packages without extraction

Is there an archive type= that prevents 0install from unpacking
Python PYZ packages?

http://fossil.include-once.org/streamtuner2/doc/trunk/dev/0-st2.xml

Use case: While my sample package also works in extracted form, it
kinda defeats the purpose. It's already relocatable and meant to be
run like a binary itself. And I don't want to publish or regenerate
a matroska zip for each release either..

>From the (Windows) Publishing Tools I assumed something like this
was meant to be available for JARs, self-contained executables or
installers already.

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