nixpkgs/pkgs/tools/misc/snapper/default.nix

{ stdenv, fetchFromGitHub
, autoreconfHook, pkgconfig, docbook_xsl, libxslt, docbook_xml_dtd_45
, acl, attr, boost, btrfs-progs, dbus_libs, diffutils, e2fsprogs, libxml2
, lvm2, pam, utillinux }:

stdenv.mkDerivation rec {
  name = "snapper-${ver}";
  ver = "0.2.8";

  src = fetchFromGitHub {
    owner = "openSUSE";
    repo = "snapper";
    rev = "v${ver}";
    sha256 = "1rj8vy6hq140pbnc7mjjb34mfqdgdah1dmlv2073izdgakh7p38j";
  };

  nativeBuildInputs = [
    autoreconfHook pkgconfig
    docbook_xsl libxslt docbook_xml_dtd_45
  ];
  buildInputs = [
    acl attr boost btrfs-progs dbus_libs diffutils e2fsprogs libxml2
    lvm2 pam utillinux
  ];

  patchPhase = ''
    # work around missing btrfs/version.h; otherwise, use "-DHAVE_BTRFS_VERSION_H"
    substituteInPlace snapper/Btrfs.cc --replace "define BTRFS_LIB_VERSION (100)" "define BTRFS_LIB_VERSION (200)";
  '';

  configurePhase = ''
    ./configure --disable-silent-rules --disable-ext4 --disable-btrfs-quota --prefix=$out
    '';

  makeFlags = "DESTDIR=$(out)";

  NIX_CFLAGS_COMPILE = [ "-I${libxml2}/include/libxml2" ];

  # Probably a hack, but using DESTDIR and PREFIX makes everything work!
  postInstall = ''
    cp -r $out/$out/* $out
    rm -r $out/nix
    '';

  meta = with stdenv.lib; {
    description = "Tool for Linux filesystem snapshot management";
    homepage = http://snapper.io;
    license = licenses.gpl2;
    platforms = platforms.linux;
    maintainers = [ maintainers.tstrobel ];
  };
}