p:archive 050 (AB)

The pipeline

<p:declare-step xmlns:c="http://www.w3.org/ns/xproc-step" xmlns:err="http://www.w3.org/ns/xproc-error" xmlns:p="http://www.w3.org/ns/xproc" version="3.0">
   <p:output port="result" pipe="report"/>
   <p:archive>
      <p:with-input port="source">
         <p:empty/>
      </p:with-input>
      <p:with-input port="manifest">
         <not-an-archive-at-all/>
      </p:with-input>
      <p:with-input port="archive">
         <p:empty/>
      </p:with-input>
   </p:archive>
</p:declare-step>