my-dvorak/usr/share/X11/xkb/rules/evdev.xml

    <layout>
      <configItem>
        <name>hu</name>
      </configItem>
      <variantList>
        <variant>
          <configItem>
            <name>dvorak</name>
            <description>Hungarian (102/dvorak/dead keys)</description>
          </configItem>
        </variant>
      </variantList>
    </layout>