{ lib, stdenv, fetchurl, patchelf, perl, ncurses, expat, python, zlib
, xorg, gtk2, glib, fontconfig, freetype, unixODBC, alsaLib, glibc
# generic inputs
, version, sha256, url ? null, ...
} :

let
  # eg, 5.5.22 => 5_5
  mkShort = let str  = stdenv.lib.strings;
                take = stdenv.lib.lists.take;
            in v: str.concatStringsSep "_" (take 2 (str.splitString "." v));
  shortVer = mkShort version;
in stdenv.mkDerivation rec {
  name = "cudatoolkit-${version}";

  dontPatchELF = true;
  dontStrip = true;

  src =
    if stdenv.system == "x86_64-linux" then
      fetchurl {
        url = if url != null then url else "http://developer.download.nvidia.com/compute/cuda/${shortVer}/rel/installers/cuda_${version}_linux_64.run";
        sha256 = sha256;
      }
    else throw "cudatoolkit does not support platform ${stdenv.system}";

  outputs = [ "out" "sdk" ];

  buildInputs = [ perl ];

  runtimeDependencies = [
    ncurses expat python zlib glibc
    xorg.libX11 xorg.libXext xorg.libXrender xorg.libXt xorg.libXtst xorg.libXi xorg.libXext
    gtk2 glib fontconfig freetype unixODBC alsaLib
  ];

  rpath = "${stdenv.lib.makeLibraryPath runtimeDependencies}:${stdenv.cc.cc}/lib64";

  unpackPhase = ''
    sh $src --keep --noexec
    cd pkg/run_files
    sh cuda-linux64-rel-${version}-*.run --keep --noexec
    sh cuda-samples-linux-${version}-*.run --keep --noexec
    cd pkg
  '';

  buildPhase = ''
    find . -type f -executable -exec patchelf \
      --set-interpreter "$(cat $NIX_CC/nix-support/dynamic-linker)" \
      '{}' \; || true
    find . -type f -exec patchelf \
      --set-rpath $rpath:$out/jre/lib/amd64/jli:$out/lib:$out/lib64:$out/nvvm/lib:$out/nvvm/lib64:$(cat $NIX_CC/nix-support/orig-cc)/lib \
      --force-rpath \
      '{}' \; || true
  '';

  installPhase = ''
    mkdir $out $sdk
    perl ./install-linux.pl --prefix="$out"
    rm $out/tools/CUDA_Occupancy_Calculator.xls
    perl ./install-sdk-linux.pl --prefix="$sdk" --cudaprefix="$out"

    # let's remove the 32-bit libraries, they confuse the lib64->lib mover
    rm -rf $out/lib

    # Fixup path to samples (needed for cuda 6.5 or else nsight will not find them)
    if [ -d "$out"/cuda-samples ]; then
        mv "$out"/cuda-samples "$out"/samples
    fi
  '';

  meta = {
    license = lib.licenses.unfree;
  };
}