linuxPackages.nvidia_x11: refactor, build more from source

* Use libglvnd;
* Compile nvidia-settings, nvidia-persistenced from source;
* Generalize builder.

pkgs/os-specific/linux/nvidia-x11/persistenced.nix

@@ -0,0 +1,30 @@
+nvidia_x11: sha256:
+
+{ stdenv, lib, fetchurl, m4 }:
+
+stdenv.mkDerivation rec {
+  name = "nvidia-persistenced-${nvidia_x11.version}";
+  inherit (nvidia_x11) version;
+
+  src = fetchurl {
+    url = "ftp://download.nvidia.com/XFree86/nvidia-persistenced/${name}.tar.bz2";
+    inherit sha256;
+  };
+
+  nativeBuildInputs = [ m4 ];
+
+  installFlags = [ "PREFIX=$(out)" ];
+
+  postFixup = ''
+    patchelf --set-rpath "$(patchelf --print-rpath $out/bin/nvidia-persistenced):${nvidia_x11}/lib" \
+      $out/bin/nvidia-persistenced
+  '';
+
+  meta = with stdenv.lib; {
+    homepage = "http://www.nvidia.com/object/unix.html";
+    description = "Settings application for NVIDIA graphics cards";
+    license = licenses.unfreeRedistributable;
+    platforms = platforms.linux;
+    maintainers = with maintainers; [ abbradar ];
+  };
+}