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diff --git a/pkgs/tools/X11/bumblebee/default.nix b/pkgs/tools/X11/bumblebee/default.nix
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+++ b/pkgs/tools/X11/bumblebee/default.nix
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+# The bumblebee package allows a program to be rendered on an
+# dedicated video card by spawning an additional X11 server
+# and streaming the results via VirtualGL to the primary server.
+
+# The package is rather chaotic; it's also quite recent.
+# As it may change a lot, some of the hacks in this nix expression
+# will hopefully not be needed in the future anymore.
+
+# To test: make sure that the 'bbswitch' kernel module is installed,
+# then run 'bumblebeed' as root and 'optirun glxgears' as user.
+# To use at startup, add e.g. to configuration.nix:
+# jobs = {
+#   bumblebeed = {
+#     name = "bumblebeed";
+#     description = "Manages the Optimus video card";
+#     startOn = "started udev and started syslogd";
+#     stopOn = "starting shutdown";
+#     exec = "bumblebeed --use-syslog";
+#     path = [ pkgs.bumblebee ];
+#     environment = { MODULE_DIR = "${config.system.modulesTree}/lib/modules"; };
+#     respawn = true;
+#   };
+# };
+
+# This nix expression supports for now only the native nvidia driver.
+# It should not be hard to generalize this approach to support the
+# nouveau driver as well (parameterize commonEnv over the module
+# package, and parameterize the two wrappers as well)
+
+{ stdenv, fetchurl, pkgconfig, help2man
+, libX11, glibc, gtkLibs, libbsd
+, makeWrapper, buildEnv, module_init_tools
+, linuxPackages, virtualgl, xorg, xkeyboard_config
+}:
+
+let
+  version = "3.0";
+  name = "bumblebee-${version}";
+
+  # isolated X11 environment with the nvidia module
+  # it should include all components needed for bumblebeed and
+  # optirun to spawn the second X server and to connect to it.
+  commonEnv = buildEnv {
+    name = "bumblebee-env";
+    paths = [
+      module_init_tools
+
+      linuxPackages.nvidia_x11
+      xorg.xorgserver
+      xorg.xrandr
+      xorg.xrdb
+      xorg.setxkbmap
+      xorg.libX11
+      xorg.libXext
+
+      virtualgl
+    ];
+
+    # the nvidia GLX module overwrites the one of xorgserver,
+    # thus nvidia_x11 must be before xorgserver in the paths.
+    ignoreCollisions = true;
+  };
+
+  # Custom X11 configuration for the additional xserver instance.
+  xorgConf = ./xorg.conf.nvidia;
+
+in stdenv.mkDerivation {
+  inherit name;
+
+  src = fetchurl {
+    url = "http://github.com/downloads/Bumblebee-Project/Bumblebee/${name}.tar.gz";
+    sha256 = "a27ddb77b282ac8b972857fdb0dc5061cf0a0982b7ac3e1cfa698b4f786e49a1";
+  };
+
+  # 'config.patch' makes bumblebee read the active module and the nvidia configuration
+  # from the environment variables instead of the config file:
+  #   BUMBLEBEE_DRIVER, BUMBLEBEE_LDPATH_NVIDIA, BUMBLEBEE_MODPATH_NVIDIA
+  # These variables must be set when bumblebeed and optirun are executed.
+  patches = [ ./config.patch ./xopts.patch ];
+
+  preConfigure = ''
+    # Substitute the path to the actual modinfo program in module.c.
+    # Note: module.c also calls rmmod and modprobe, but those just have to
+    # be in PATH, and thus no action for them is required.
+    substituteInPlace src/module.c \
+      --replace "/sbin/modinfo" "${module_init_tools}/sbin/modinfo"
+
+    # Don't use a special group, just reuse wheel.
+    substituteInPlace configure \
+      --replace 'CONF_GID="bumblebee"' 'CONF_GID="wheel"'
+
+    # Ensures that the config file ends up with a nonempty
+    # name of the nvidia module. This is needed, because the
+    # configuration handling code otherwise resets the
+    # data that we obtained from the environment (see config.patch)
+    export CONF_DRIVER_MODULE_NVIDIA=nvidia
+  '';
+
+  # Build-time dependencies of bumblebeed and optirun.
+  # Note that it has several runtime dependencies.
+  buildInputs = [ stdenv makeWrapper pkgconfig help2man libX11 gtkLibs.glib libbsd ];
+
+  # create a wrapper environment for bumblebeed and optirun
+  postInstall = ''
+    # remove some entries from the configuration file that would otherwise
+    # cause our environment variables to be ignored.
+    substituteInPlace "$out/etc/bumblebee/bumblebee.conf" \
+      --replace "LibraryPath=" "" \
+      --replace "XorgModulePath=" ""
+
+    wrapProgram "$out/sbin/bumblebeed" \
+      --prefix PATH : "${commonEnv}/sbin:${commonEnv}/bin:\$PATH" \
+      --prefix LD_LIBRARY_PATH : "${commonEnv}/lib:\$LD_LIBRARY_PATH" \
+      --set BUMBLEBEE_DRIVER "nvidia" \
+      --set BUMBLEBEE_LDPATH_NVIDIA "${commonEnv}/lib" \
+      --set BUMBLEBEE_MODPATH_NVIDIA "${commonEnv}/lib/xorg/modules" \
+      --set FONTCONFIG_FILE "/etc/fonts/fonts.conf" \
+      --set XKB_BINDIR "${xorg.xkbcomp}/bin" \
+      --set XKB_DIR "${xkeyboard_config}/etc/X11/xkb"
+
+    wrapProgram "$out/bin/optirun" \
+      --prefix PATH : "${commonEnv}/sbin:${commonEnv}/bin" \
+      --prefix LD_LIBRARY_PATH : "${commonEnv}/lib" \
+      --set BUMBLEBEE_DRIVER "nvidia" \
+      --set BUMBLEBEE_LDPATH_NVIDIA "${commonEnv}/lib" \
+      --set BUMBLEBEE_MODPATH_NVIDIA "${commonEnv}/lib/xorg/modules"
+
+    cp ${xorgConf} "$out/etc/bumblebee/xorg.conf.nvidia"
+  '';
+
+  meta = {
+    homepage = http://github.com/Bumblebee-Project/Bumblebee;
+    description = "Daemon for managing Optimus videocards (power-on/off, spawns xservers)";
+    license = "free";
+  };
+}