nixos/networking: add the wakeonlan option

nixos/doc/manual/from_md/release-notes/rl-2111.section.xml

@@ -326,6 +326,13 @@
   <section xml:id="sec-release-21.11-incompatibilities">
     <title>Backward Incompatibilities</title>
     <itemizedlist>
+      <listitem>
+        <para>
+          The <literal>services.wakeonlan</literal> option was removed,
+          and replaced with
+          <literal>networking.interfaces.&lt;name&gt;.wakeOnLan</literal>.
+        </para>
+      </listitem>
       <listitem>
         <para>
           The <literal>security.wrappers</literal> option now requires

nixos/doc/manual/release-notes/rl-2111.section.md

@@ -101,6 +101,8 @@ In addition to numerous new and upgraded packages, this release has the followin
 
 ## Backward Incompatibilities {#sec-release-21.11-incompatibilities}
 
+- The `services.wakeonlan` option was removed, and replaced with `networking.interfaces.<name>.wakeOnLan`.
+
 - The `security.wrappers` option now requires to always specify an owner, group and whether the setuid/setgid bit should be set.
   This is motivated by the fact that before NixOS 21.11, specifying either setuid or setgid but not owner/group resulted in wrappers owned by nobody/nogroup, which is unsafe.
 

nixos/modules/tasks/network-interfaces-scripted.nix

@@ -61,6 +61,8 @@ let
           MACAddress = i.macAddress;
         } // optionalAttrs (i.mtu != null) {
           MTUBytes = toString i.mtu;
+        } // optionalAttrs (i.wakeOnLan.enable == true) {
+          WakeOnLan = "magic";
         };
       };
     in listToAttrs (map createNetworkLink interfaces);

nixos/modules/tasks/network-interfaces.nix

@@ -284,6 +284,13 @@ let
         '';
       };
 
+      wakeOnLan = {
+        enable = mkOption {
+          type = types.bool;
+          default = false;
+          description = "Wether to enable wol on this interface.";
+        };
+      };
     };
 
     config = {