Is there a way to run XQuery functions / or XQuery scripts locally within an XSLT script file?

The previous question I made in stack overflow was about how to successfully use load-query-module to run XQuery in XSLT, however the runtime has to be able know how use the location-hint to find the XQuery module to load it.

If I assume my SAP Platform runtime doesn't support this then I need another way to run XQuery within XSLT. Is there away to pass the XQuery as a parameter and then run this within the XSLT or can the XSLT refer to another part of XSLT that has the XQuery embedded elsewhere within the script file?

Here is an example for Saxon 12 (PE/EE) using https://www.saxonica.com/html/documentation12/functions/saxon/xquery.html:

<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="3.0"
  xmlns:xs="http://www.w3.org/2001/XMLSchema"
  xmlns:saxon="http://saxon.sf.net/"
  exclude-result-prefixes="#all">

  <xsl:param name="xquery-param1" as="xs:string" expand-text="no"><![CDATA[
  declare variable $x external; declare variable $y external; <z>{$x + $y + .}</z>
  ]]></xsl:param>

  <xsl:output indent="yes"/>

  <xsl:template match="/" name="xsl:initial-template">
    <result>
      <xsl:variable name="xquery1" select="saxon:xquery($xquery-param1)"/>
      <xsl:sequence select="$xquery1(4, map{xs:QName('x'): 3, xs:QName('y'): 2})"/>
    </result>
  </xsl:template>

</xsl:stylesheet>

And for saxon:compile-query/saxon:query:

<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="3.0"
  xmlns:xs="http://www.w3.org/2001/XMLSchema"
  xmlns:saxon="http://saxon.sf.net/"
  exclude-result-prefixes="#all">

  <xsl:param name="xquery-param1" as="xs:string" expand-text="no"><![CDATA[
  declare variable $x external; declare variable $y external; <z>{$x + $y + .}</z>
  ]]></xsl:param>

  <xsl:output indent="yes"/>

  <xsl:template match="/" name="xsl:initial-template">
    <result>
      <xsl:variable name="xquery1" select="saxon:compile-query($xquery-param1)"/>
      <xsl:variable name="xquery1-params" as="element()*">
         <x>3</x>
         <y>2</y>
      </xsl:variable>
      <xsl:sequence select="saxon:query($xquery1,4, $xquery1-params)"/>
    </result>
  </xsl:template>

</xsl:stylesheet>