diff --git a/boot/boot-stage-2.nix b/boot/boot-stage-2.nix
index 5d0ac24be6f..5de8135867a 100644
--- a/boot/boot-stage-2.nix
+++ b/boot/boot-stage-2.nix
@@ -1,27 +1,51 @@
-{ substituteAll, writeText, coreutils
-, utillinux, kernel, udev, upstart
-, activateConfiguration
+{pkgs, config, ...}:
 
-, # Whether the root device is read-only and should be made writable
-  # through a unionfs.
-  isLiveCD
+let
+  inherit (pkgs) substituteAll writeText coreutils utillinux udev upstart;
+  kernel = config.boot.kernelPackages.kernel;
+  activateConfiguration = config.system.activationScripts.script;
+  inherit (config.boot) isLiveCD;
 
-, # Path for Upstart jobs.  Should be quite minimal.
-  upstartPath
-
-, # User-supplied command to be run just before Upstart is started.
-  bootLocal ? ""
-}:
-
-substituteAll {
-  src = ./boot-stage-2-init.sh;
-  isExecutable = true;
-  inherit kernel upstart isLiveCD activateConfiguration upstartPath;
-  path = [
-    coreutils
-    utillinux
-    udev
-    upstart
+  # Path for Upstart jobs.  Should be quite minimal.
+  upstartPath = [
+    pkgs.coreutils
+    pkgs.findutils
+    pkgs.gnugrep
+    pkgs.gnused
+    pkgs.upstart
   ];
-  bootLocal = writeText "local-cmds" bootLocal;
+
+  bootLocal = config.boot.localCommands;
+
+  bootStage2 = substituteAll {
+    src = ./boot-stage-2-init.sh;
+    isExecutable = true;
+    inherit kernel upstart isLiveCD activateConfiguration upstartPath;
+    path = [
+      coreutils
+      utillinux
+      udev
+      upstart
+    ];
+    bootLocal = writeText "local-cmds" bootLocal;
+  };
+in
+
+{
+  require = [
+    # config.boot.localCommands
+    # config.boot.kernelPackages
+
+    # config.system.activationScripts
+    (import ../system/activate-configuration.nix)
+
+    # config.system.build
+    (import ../system/system-options.nix)
+  ];
+
+  system = {
+    build = {
+      inherit bootStage2;
+    };
+  };
 }
diff --git a/system/options.nix b/system/options.nix
index ba3366ec5b0..c52a2327463 100644
--- a/system/options.nix
+++ b/system/options.nix
@@ -2507,6 +2507,9 @@ in
   };
 
   require = [
+    # boot (is it the right place ?)
+    (import ../boot/boot-stage-2.nix)
+
     # system
     (import ../system/system-options.nix)
     (import ../system/activate-configuration.nix)
diff --git a/system/system.nix b/system/system.nix
index e6dc5c6d53e..8271b97371c 100644
--- a/system/system.nix
+++ b/system/system.nix
@@ -191,20 +191,7 @@ rec {
 
   # The init script of boot stage 2, which is supposed to do
   # everything else to bring up the system.
-  bootStage2 = import ../boot/boot-stage-2.nix {
-    inherit (pkgs) substituteAll writeText coreutils 
-      utillinux udev upstart;
-    inherit kernel activateConfiguration;
-    inherit (config.boot) isLiveCD;
-    upstartPath = [
-      pkgs.coreutils
-      pkgs.findutils
-      pkgs.gnugrep
-      pkgs.gnused
-      pkgs.upstart
-    ];
-    bootLocal = config.boot.localCommands;
-  };
+  bootStage2 = config.system.build.bootStage2;
 
 
   # Script to build the Grub menu containing the current and previous