<grammar xmlns="http://relaxng.org/ns/structure/1.0">

<start>

  <ref name="comps"/>

</start>

<define name="package-name">

  <text/>

</define>

<define name="group-name">

  <text/>

</define>

<define name="lang">

  <text/>

</define>

<define name="description-text">

  <text/>

</define>

<define name="comps">

  <element name="comps">

    <oneOrMore>

      <ref name="group"/>

    </oneOrMore>

    <ref name="grouphierarchy"/>

    <oneOrMore>

      <ref name="package"/>

    </oneOrMore>

  </element>

</define>

<define name="group">

  <element name="group">

    <element name="id">

      <ref name="group-name"/>

    </element>

    <interleave>

      <ref name="names"/>

      <optional>

        <element name="default">

          <choice>

            <value>true</value>

            <value>false</value>

          </choice>

        </element>

      </optional>

      <optional>

        <ref name="descriptions"/>

      </optional>

      <optional>

        <element name="uservisible">

          <choice>

            <value>true</value>

            <value>false</value>

          </choice>

        </element>

      </optional>

      <optional>

        <element name="langonly">

	  <ref name="lang"/>

        </element>

      </optional>

    </interleave>

    <optional>

      <element name="grouplist">

        <zeroOrMore>

	  <element name="groupreq">

	    <ref name="group-name"/>

	  </element>

        </zeroOrMore>

        <zeroOrMore>

	  <element name="metapkg">

	    <attribute name="type">

	      <choice>

	        <value>default</value>

	        <value>optional</value>

	      </choice>

	    </attribute>

	    <ref name="package-name"/>

	  </element>

        </zeroOrMore>

      </element>

    </optional>

    <optional>

      <element name="packagelist">

        <oneOrMore>

          <element name="packagereq">

	    <attribute name="type">

	      <choice>

	        <value>default</value>

	        <value>mandatory</value>

	        <value>optional</value>

	      </choice>

	    </attribute>

	    <optional>

	      <attribute name="requires">

	        <ref name="package-name"/>

	      </attribute>

	    </optional>

	    <ref name="package-name"/>

	  </element>

        </oneOrMore>

      </element>

    </optional>

  </element>

</define>

<define name="grouphierarchy">

  <element name="grouphierarchy">

    <oneOrMore>

      <ref name="category"/>

    </oneOrMore>

  </element>

</define>

<define name="category">

  <element name="category">

    <ref name="names"/>

    <optional>

      <element name="subcategories">

        <oneOrMore>

	  <element name="subcategory">

	    <ref name="package-name"/>

	  </element>

        </oneOrMore>

      </element>

    </optional>

  </element>

</define>

<define name="package">

  <element name="package">

    <element name="name">

      <ref name="package-name"/>

    </element>

    <element name="dependencylist">

      <zeroOrMore>

        <element name="dependency">

	  <ref name="package-name"/>

	</element>

      </zeroOrMore>

    </element>

  </element>

</define>

<define name="names">

  <element name="name">

    <ref name="description-text"/>

  </element>

  <zeroOrMore>

    <element name="name">

      <attribute name="xml:lang">

        <ref name="lang"/>

      </attribute>

      <ref name="description-text"/>

    </element>

  </zeroOrMore>

</define>

<define name="descriptions">

  <element name="description">

    <ref name="description-text"/>

  </element>

  <zeroOrMore>

    <element name="description">

      <attribute name="xml:lang">

        <ref name="lang"/>

      </attribute>

      <ref name="description-text"/>

    </element>

  </zeroOrMore>

</define>

</grammar>