Loading collection() from a second document provided on the input port to an xslt

1) Output

dcramer@anatine-2 ~/Downloads/load-xinclude
$ /Applications/xmlcalabash-1.1.20-98/calabash -i ./book.xml load-xinclude.xpl
<wrapper xmlns:c="http://www.w3.org/ns/xproc-step"><loadme.xml><book xmlns="http://docbook.org/ns/docbook" xmlns:xi="http://www.w3.org/2001/XInclude" xmlns:xlink="http://www.w3.org/1999/xlink" version="5.0">
    <title>test</title>
    <chapter version="5.0" xml:base="file:/Users/dcramer/Downloads/load-xinclude/chapter.xml">
    <title>Chapter</title>
    <para>Ipsum</para>
</chapter>
    <glossary role="auto"/>
</book></loadme.xml><glossary.xml><glossary xmlns="http://docbook.org/ns/docbook" xmlns:xi="http://www.w3.org/2001/XInclude" xmlns:xlink="http://www.w3.org/1999/xlink" version="5.0">
    <title>Terminology</title>

    <glossentry>
        <glossterm>Foo</glossterm>
        <glossdef>
            <para>bar</para>
        </glossdef>
    </glossentry>

    <title xml:base="file:/Users/dcramer/Downloads/load-xinclude/master-glossary.xml">Main glossary</title><glossentry xml:base="file:/Users/dcramer/Downloads/load-xinclude/master-glossary.xml">
        <glossterm>Ipsum</glossterm>
        <glossdef>
            <para>Lorem</para>
        </glossdef>
    </glossentry><glossentry xml:base="file:/Users/dcramer/Downloads/load-xinclude/master-glossary.xml">
        <glossterm>Lorum</glossterm>
        <glossdef>
            <para>Ipsum</para>
        </glossdef>
    </glossentry>

</glossary></glossary.xml></wrapper>

2) load-xinclude.xpl

<?xml version="1.0" encoding="UTF-8"?>
<p:declare-step xmlns:p="http://www.w3.org/ns/xproc" xmlns:c="http://www.w3.org/ns/xproc-step"
    version="1.0" name="main">
    <p:input port="source"/>
    <p:output port="result">
        <p:pipe port="result" step="test"/>
    </p:output>
    
    <p:xinclude fixup-xml-base="true" name="xinclude"/>
    
    <p:load href="glossary.xml"/>
    <p:xinclude fixup-xml-base="true" name="xinclude-glossary"/>
    <p:sink/>
    
    <p:xslt name="test">
        <p:input port="source">
            <p:pipe port="result" step="xinclude"/>
            <p:pipe port="result" step="xinclude-glossary"/>
        </p:input>
        <p:input port="parameters">
            <p:empty/>
        </p:input>
        <p:input port="stylesheet">
            
            <p:inline>
                <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
                    xmlns:c="http://www.w3.org/ns/xproc-step" version="3.0">
                    <xsl:output indent="yes" />
                    <xsl:mode on-no-match="shallow-copy" />
                    <xsl:template match="/">
                        <wrapper>
                            
                            <book.xml>
                                <xsl:apply-templates/>
                            </book.xml>
                            
                            <glossary.xml>
                                <xsl:apply-templates select="collection()/db:glossary" xmlns:db="http://docbook.org/ns/docbook" />
                            </glossary.xml>
                            
                        </wrapper>
                    </xsl:template>
                    
                </xsl:stylesheet>
            </p:inline>
        </p:input>
        
    </p:xslt>
    
</p:declare-step>

3) book.xml

<?xml version="1.0" encoding="UTF-8"?>
<book xmlns="http://docbook.org/ns/docbook" 
    xmlns:xi="http://www.w3.org/2001/XInclude"
    xmlns:xlink="http://www.w3.org/1999/xlink" version="5.0">
    <title>test</title>
    <xi:include href="chapter.xml"/>
    <glossary role="auto"/>
</book>

4) chapter.xml

<?xml version="1.0" encoding="UTF-8"?>
<chapter xmlns="http://docbook.org/ns/docbook" 
    xmlns:xlink="http://www.w3.org/1999/xlink" version="5.0">
    <title>Chapter</title>
    <para>Ipsum</para>
</chapter>

5) glossary.xml

<?xml version="1.0" encoding="UTF-8"?>
<glossary xmlns="http://docbook.org/ns/docbook"
    xmlns:xi="http://www.w3.org/2001/XInclude"
    xmlns:xlink="http://www.w3.org/1999/xlink" version="5.0">
    <title>Terminology</title>

    <glossentry>
        <glossterm>Foo</glossterm>
        <glossdef>
            <para>bar</para>
        </glossdef>
    </glossentry>

    <xi:include href="master-glossary.xml" xpointer="xpath(/*/*)"/>

</glossary>

6) master-glossary.xml

<?xml version="1.0" encoding="UTF-8"?>
<glossary xmlns="http://docbook.org/ns/docbook"
    xmlns:xi="http://www.w3.org/2001/XInclude"
    xmlns:xlink="http://www.w3.org/1999/xlink" version="5.0">
    <title>Main glossary</title>

    <glossentry>
        <glossterm>Ipsum</glossterm>
        <glossdef>
            <para>Lorem</para>
        </glossdef>
    </glossentry>

    <glossentry>
        <glossterm>Lorum</glossterm>
        <glossdef>
            <para>Ipsum</para>
        </glossdef>
    </glossentry>


</glossary>