Add documentation for XFCE

nixos/doc/manual/configuration/xfce.xml

@@ -0,0 +1,49 @@
+<chapter xmlns="http://docbook.org/ns/docbook"
+         xmlns:xlink="http://www.w3.org/1999/xlink"
+         xmlns:xi="http://www.w3.org/2001/XInclude"
+         version="5.0"
+         xml:id="sec-x11">
+
+    <title>XFCE Desktop Environment</title>
+
+    <para>
+        To enable the XFCE Desktop Environment, set
+        <programlisting>
+            services.xserver.desktopManager = {
+                xfce.enable = true;
+                default = "xfce";
+            };
+        </programlisting>
+    </para>
+
+    <para>
+        Optionally, <emphasis>compton</emphasis>
+        can be enabled for nice graphical effects, some example settings:
+        <programlisting>
+            services.compton = {
+              enable          = true;
+              fade            = true;
+              inactiveOpacity = "0.9";
+              shadow          = true;
+              fadeDelta       = 4;
+            };
+        </programlisting>
+    </para>
+
+    <para>
+        XFCE programs are not installed automatically.
+        To install them manually (system wide), put them into your
+        <literal>environment.systemPackages</literal>-
+    <para>
+
+    <para>
+        NixOS’s default <emphasis>display manager</emphasis> (the
+        program that provides a graphical login prompt and manages the X
+        server) is SLiM. You can, for example, select KDE’s
+        <command>kdm</command> instead:
+        <programlisting>
+            services.xserver.displayManager.kdm.enable = true;
+        </programlisting>
+    </para>
+
+</chapter>