ExtensionsPref: always convert the extension version to a string

This fixes: Wrong type number; string expected
MR: https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1060

docs/reference/shell/meson.build

@@ -0,0 +1,56 @@
+private_headers = [
+  'gactionmuxer.h',
+  'gactionobservable.h',
+  'gactionobserver.h',
+  'shell-network-agent.h',
+  'shell-recorder-src.h'
+]
+
+if not enable_recorder
+  private_headers += 'shell-recorder.h'
+endif
+
+exclude_directories = [
+  'calendar-server',
+  'hotplug-sniffer',
+  'st',
+  'tray'
+]
+
+ifaces = [
+  ['org.gnome.Shell.Screenshot', 'org.gnome.Shell.Screenshot.xml'],
+  ['org.gnome.ShellSearchProvider', 'org.gnome.Shell.SearchProvider.xml'],
+  ['org.gnome.ShellSearchProvider2', 'org.gnome.Shell.SearchProvider2.xml']
+]
+foreach iface : ifaces
+  custom_target(iface[0] + ' docs',
+    input: '../../../data/dbus-interfaces/@0@.xml'.format(iface[0]),
+    output: 'doc-gen-' + iface[1],
+    command: [
+      'gdbus-codegen',
+      '--interface-prefix=@0@.'.format(iface[0]),
+      '--generate-docbook', 'doc-gen',
+      '--output-directory', '@OUTDIR@',
+      '@INPUT@'
+    ],
+    build_by_default: true
+  )
+endforeach
+
+configure_file(
+  input: 'version.xml.in',
+  output: 'version.xml',
+  configuration: version_conf
+)
+
+gnome.gtkdoc('shell',
+  main_sgml: 'shell-docs.sgml',
+  src_dir: [
+    join_paths(meson.source_root(), 'src'),
+    join_paths(meson.build_root(), 'src')
+  ],
+  scan_args: [
+    '--ignore-headers=' + ' '.join(private_headers + exclude_directories)
+  ],
+  install: true
+)

docs/reference/shell/shell-docs.sgml

@@ -0,0 +1,73 @@
+<?xml version="1.0"?>
+<!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook XML V4.3//EN"
+               "http://www.oasis-open.org/docbook/xml/4.3/docbookx.dtd"
+[
+  <!ENTITY % local.common.attrib "xmlns:xi  CDATA  #FIXED 'http://www.w3.org/2003/XInclude'">
+  <!ENTITY version SYSTEM "version.xml">
+]>
+<book id="index">
+  <bookinfo>
+    <title>Shell Reference Manual</title>
+    <releaseinfo>
+      for Shell &version;.
+      <!--The latest version of this documentation can be found on-line at
+      <ulink role="online-location" url="http://[SERVER]/shell/index.html">http://[SERVER]/shell/</ulink>.-->
+    </releaseinfo>
+  </bookinfo>
+
+  <chapter>
+    <title>Actors</title>
+    <xi:include href="xml/shell-stack.xml"/>
+  </chapter>
+  <chapter>
+    <title>Application tracking</title>
+    <xi:include href="xml/shell-app.xml"/>
+    <xi:include href="xml/shell-app-usage.xml"/>
+    <xi:include href="xml/shell-window-tracker.xml"/>
+  </chapter>
+  <chapter>
+    <title>Search</title>
+    <xi:include href="xml/shell-app-system.xml"/>
+  </chapter>
+  <chapter>
+    <title>Tray Icons</title>
+    <xi:include href="xml/shell-embedded-window.xml"/>
+    <xi:include href="xml/shell-gtk-embed.xml"/>
+    <xi:include href="xml/shell-tray-icon.xml"/>
+    <xi:include href="xml/shell-tray-manager.xml"/>
+  </chapter>
+  <chapter>
+    <title>Recorder</title>
+    <xi:include href="xml/shell-recorder.xml"/>
+  </chapter>
+  <chapter>
+    <title>Integration helpers and utilities</title>
+    <xi:include href="doc-gen-org.gnome.Shell.SearchProvider.xml"/>
+    <xi:include href="doc-gen-org.gnome.Shell.SearchProvider2.xml"/>
+    <xi:include href="xml/shell-global.xml"/>
+    <xi:include href="xml/shell-action-modes.xml"/>
+    <xi:include href="xml/shell-wm.xml"/>
+    <xi:include href="xml/shell-util.xml"/>
+    <xi:include href="xml/shell-mount-operation.xml"/>
+    <xi:include href="xml/shell-polkit-authentication-agent.xml"/>
+  </chapter>
+  <!-- FIXME:
+       Not generated at the moment, find out whether to blame gtk-doc or meson
+  -->
+  <!--
+  <chapter id="object-tree">
+    <title>Object Hierarchy</title>
+     <xi:include href="xml/tree_index.sgml"/>
+  </chapter>
+  -->
+  <index id="api-index-full">
+    <title>API Index</title>
+    <xi:include href="xml/api-index-full.xml"><xi:fallback /></xi:include>
+  </index>
+  <index id="deprecated-api-index" role="deprecated">
+    <title>Index of deprecated API</title>
+    <xi:include href="xml/api-index-deprecated.xml"><xi:fallback /></xi:include>
+  </index>
+
+  <xi:include href="xml/annotation-glossary.xml"><xi:fallback /></xi:include>
+</book>

docs/reference/shell/version.xml.in

@@ -0,0 +1 @@
+@VERSION@