<schema xmlns="http://purl.oclc.org/dsdl/schematron" queryBinding="xslt2" defaultPhase="foobar">
<let name="foobar" value="'...'"/>
<phase id="foobar">
<let name="foobar" value="'xxx'"/>
<active pattern="foobar"/>
</phase>
<pattern id="foobar">
<rule context="*">
<assert test="false()"/>
</rule>
</pattern>
</schema>```
The Skeleton creates an invalid stylesheet. The root cause is the same problem as in #76.
Given the following Schematron: