nixosOptionsDoc: Make appendix tag optional

nixos/lib/make-options-doc/default.nix

@@ -20,6 +20,8 @@
 , lib
 , options
 , transformOptions ? lib.id  # function for additional tranformations of the options
+, documentType ? "appendix" # TODO deprecate "appendix" in favor of "none"
+                            #      and/or rename function to moduleOptionDoc for clean slate
 , revision ? "" # Specify revision for the options
 # a set of options the docs we are generating will be merged into, as if by recursiveUpdate.
 # used to split the options doc build into a static part (nixos/modules) and a dynamic part
@@ -161,6 +163,7 @@ in rec {
 
     ${pkgs.python3Minimal}/bin/python ${./sortXML.py} $optionsXML sorted.xml
     ${pkgs.libxslt.bin}/bin/xsltproc \
+      --stringparam documentType '${documentType}' \
       --stringparam revision '${revision}' \
       -o intermediate.xml ${./options-to-docbook.xsl} sorted.xml
     ${pkgs.libxslt.bin}/bin/xsltproc \

nixos/lib/make-options-doc/options-to-docbook.xsl

@@ -12,12 +12,25 @@
   <xsl:output method='xml' encoding="UTF-8" />
 
   <xsl:param name="revision" />
+  <xsl:param name="documentType" />
   <xsl:param name="program" />
 
 
   <xsl:template match="/expr/list">
-    <appendix xml:id="appendix-configuration-options">
-      <title>Configuration Options</title>
+    <xsl:choose>
+      <xsl:when test="$documentType = 'appendix'">
+        <appendix xml:id="appendix-configuration-options">
+          <title>Configuration Options</title>
+          <xsl:call-template name="variable-list"/>
+        </appendix>
+      </xsl:when>
+      <xsl:otherwise>
+        <xsl:call-template name="variable-list"/>
+      </xsl:otherwise>
+    </xsl:choose>
+  </xsl:template>
+
+  <xsl:template name="variable-list">
       <variablelist xml:id="configuration-variable-list">
         <xsl:for-each select="attrs">
           <xsl:variable name="id" select="concat('opt-', str:replace(str:replace(str:replace(str:replace(attr[@name = 'name']/string/@value, '*', '_'), '&lt;', '_'), '>', '_'), ':', '_'))" />
@@ -96,7 +109,6 @@
         </xsl:for-each>
 
       </variablelist>
-    </appendix>
   </xsl:template>