Adding psmouse-alps, a touchpad kernel driver.

Some laptops use these new touchpads, and this driver is
supposed to provide proper support for them.

pkgs/os-specific/linux/psmouse-alps/default.nix

@@ -0,0 +1,34 @@
+{ stdenv, fetchurl, kernelDev, zlib }:
+
+let
+  ver = "1.3";
+  bname = "psmouse-alps-${ver}";
+in
+stdenv.mkDerivation {
+  name = "psmouse-alps-${kernelDev.version}-${ver}";
+
+  src = fetchurl {
+    url = http://www.dahetral.com/public-download/alps-psmouse-dlkm-for-3-2-and-3-5/at_download/file;
+    name = "${bname}-alt.tar.bz2";
+    sha256 = "1ghr8xcyidz31isxbwrbcr9rvxi4ad2idwmb3byar9n2ig116cxp";
+  };
+
+  buildPhase = ''
+    cd src/${bname}/src
+    make -C ${kernelDev}/lib/modules/${kernelDev.modDirVersion}/build \
+      SUBDIRS=`pwd` INSTALL_PATH=$out
+  '';
+
+  installPhase = ''
+    make -C ${kernelDev}/lib/modules/${kernelDev.modDirVersion}/build \
+      INSTALL_MOD_PATH=$out SUBDIRS=`pwd` modules_install
+  '';
+      
+  meta = {
+    description = "ALPS dlkm driver with all known touchpads";
+    homepage = http://www.dahetral.com/public-download/alps-psmouse-dlkm-for-3-2-and-3-5/view;
+    license = "GPLv2";
+    platforms = stdenv.lib.platforms.linux;
+    maintainers = with stdenv.lib.maintainers; [viric];
+  };
+}

pkgs/top-level/all-packages.nix

@@ -6238,6 +6238,8 @@ let
 
     perf = callPackage ../os-specific/linux/kernel/perf.nix { };
 
+    psmouse_alps = callPackage ../os-specific/linux/psmouse-alps { };
+
     spl = callPackage ../os-specific/linux/spl/default.nix { };
 
     sysprof = callPackage ../development/tools/profiling/sysprof {