{ stdenv, fetchgit, kernel, perl, autoconf, automake, libtool, coreutils, gawk }:

stdenv.mkDerivation {
  name = "spl-0.6.4-${kernel.version}";

  src = fetchgit {
    url = git://github.com/zfsonlinux/spl.git;
    rev = "086476f92005506cb07e75f889e8ddb69026e842";
    sha256 = "1n3cjdwxccvcns7jydgznkb6jy0p59qx1yg512jjf4m9hf5p2pwm";
  };

  patches = [ ./const.patch ./install_prefix-git.patch ];

  buildInputs = [ perl autoconf automake libtool ];

  preConfigure = ''
    ./autogen.sh

    substituteInPlace ./module/spl/spl-generic.c --replace /usr/bin/hostid hostid
    substituteInPlace ./module/spl/spl-module.c  --replace /bin/mknod mknod

    substituteInPlace ./module/spl/spl-generic.c --replace "PATH=/sbin:/usr/sbin:/bin:/usr/bin" "PATH=${coreutils}:${gawk}:/bin"
    substituteInPlace ./module/splat/splat-vnode.c --replace "PATH=/sbin:/usr/sbin:/bin:/usr/bin" "PATH=${coreutils}:/bin"
    substituteInPlace ./module/splat/splat-linux.c --replace "PATH=/sbin:/usr/sbin:/bin:/usr/bin" "PATH=${coreutils}:/bin"
  '';

  configureFlags = [
    "--with-linux=${kernel.dev}/lib/modules/${kernel.modDirVersion}/source"
    "--with-linux-obj=${kernel.dev}/lib/modules/${kernel.modDirVersion}/build"
  ];

  enableParallelBuilding = true;

  meta = {
    description = "Kernel module driver for solaris porting layer (needed by in-kernel zfs)";

    longDescription = ''
      This kernel module is a porting layer for ZFS to work inside the linux
      kernel.
    '';

    homepage = http://zfsonlinux.org/;
    platforms = stdenv.lib.platforms.linux;
    license = stdenv.lib.licenses.gpl2Plus;
    maintainers = with stdenv.lib.maintainers; [ wizeman ];
  };
}