makeDBusConf: init

Use XSLT transform to modify stock dbus configuration file. This is needed
because some dbus components doesn't support <include> so we need to put our
core configuration in the main file.

pkgs/development/libraries/dbus/make-session-conf.xsl

@@ -0,0 +1,30 @@
+<?xml version="1.0"?>
+
+<!--
+  This script copies the original system.conf from the dbus
+  distribution, but sets paths from $serviceDirectories parameter
+  and suid helper from $suidHelper parameter.
+-->
+
+<xsl:stylesheet version="1.0"
+                xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
+                xmlns:str="http://exslt.org/strings"
+                extension-element-prefixes="str"
+                >
+
+  <xsl:output method='xml' encoding="UTF-8" doctype-system="busconfig.dtd" />
+
+  <xsl:param name="serviceDirectories" />
+
+  <xsl:template match="/busconfig">
+    <busconfig>
+      <xsl:copy-of select="child::node()[name() != 'include' and name() != 'standard_session_servicedirs' and name() != 'servicedir' and name() != 'includedir']" />
+
+      <xsl:for-each select="str:tokenize($serviceDirectories)">
+        <servicedir><xsl:value-of select="." />/share/dbus-1/services</servicedir>
+        <includedir><xsl:value-of select="." />/etc/dbus-1/session.d</includedir>
+      </xsl:for-each>
+    </busconfig>
+  </xsl:template>
+
+</xsl:stylesheet>