{ stdenv, fetchurl, readline
# compiles compatibility layer with lua5.1
, compat ? false
, callPackage
, self
, packageOverrides ? (self: super: {})
}:

let
  dsoPatch = fetchurl {
    url = "https://projects.archlinux.org/svntogit/packages.git/plain/trunk/liblua.so.patch?h=packages/lua52";
    sha256 = "1by1dy4ql61f5c6njq9ibf9kaqm3y633g2q8j54iyjr4cxvqwqz9";
    name = "lua-arch.patch";
  };
  luaPackages = callPackage ../../lua-modules {lua=self; overrides=packageOverrides;};
in
stdenv.mkDerivation rec {
  name = "lua-${version}";
  luaversion = "5.2";
  version = "${luaversion}.4";

  LuaPathSearchPaths    = luaPackages.getLuaPathList luaversion;
  LuaCPathSearchPaths   = luaPackages.getLuaCPathList luaversion;
  setupHook = luaPackages.lua-setup-hook LuaPathSearchPaths LuaCPathSearchPaths;

  src = fetchurl {
    url = "https://www.lua.org/ftp/${name}.tar.gz";
    sha256 = "0jwznq0l8qg9wh5grwg07b5cy3lzngvl5m2nl1ikp6vqssmf9qmr";
  };

  buildInputs = [ readline ];

  patches = if stdenv.isDarwin then [ ./5.2.darwin.patch ] else [ dsoPatch ];


  passthru = rec {
    buildEnv = callPackage ./wrapper.nix {
      lua = self;
      inherit (luaPackages) requiredLuaModules;
    };
    withPackages = import ./with-packages.nix { inherit buildEnv luaPackages;};
    pkgs = luaPackages;
    interpreter = "${self}/bin/lua";
  };

  enableParallelBuilding = true;

  configurePhase =
    if stdenv.isDarwin
    then ''
    makeFlagsArray=( INSTALL_TOP=$out INSTALL_MAN=$out/share/man/man1 PLAT=macosx CFLAGS="-DLUA_USE_LINUX -fno-common -O2 -fPIC${if compat then " -DLUA_COMPAT_ALL" else ""}" LDFLAGS="-fPIC" V=${luaversion} R=${version}  CC="$CC" )
    installFlagsArray=( TO_BIN="lua luac" TO_LIB="liblua.${version}.dylib" INSTALL_DATA='cp -d' )
  '' else ''
    makeFlagsArray=( INSTALL_TOP=$out INSTALL_MAN=$out/share/man/man1 PLAT=linux CFLAGS="-DLUA_USE_LINUX -O2 -fPIC${if compat then " -DLUA_COMPAT_ALL" else ""}" LDFLAGS="-fPIC" V=${luaversion} R=${version} CC="$CC" AR="$AR q" RANLIB="$RANLIB" )
    installFlagsArray=( TO_BIN="lua luac" TO_LIB="liblua.a liblua.so liblua.so.${luaversion} liblua.so.${version}" INSTALL_DATA='cp -d' )
  '';

  postInstall = ''
    mkdir -p "$out/share/doc/lua" "$out/lib/pkgconfig"
    mv "doc/"*.{gif,png,css,html} "$out/share/doc/lua/"
    rmdir $out/{share,lib}/lua/${luaversion} $out/{share,lib}/lua
    mkdir -p "$out/lib/pkgconfig"
    cat >"$out/lib/pkgconfig/lua.pc" <<EOF
    prefix=$out
    libdir=$out/lib
    includedir=$out/include
    INSTALL_BIN=$out/bin
    INSTALL_INC=$out/include
    INSTALL_LIB=$out/lib
    INSTALL_MAN=$out/man/man1

    Name: Lua
    Description: An Extensible Extension Language
    Version: ${version}
    Requires:
    Libs: -L$out/lib -llua -lm
    Cflags: -I$out/include
    EOF
  '';

  meta = {
    homepage = http://www.lua.org;
    description = "Powerful, fast, lightweight, embeddable scripting language";
    longDescription = ''
      Lua combines simple procedural syntax with powerful data
      description constructs based on associative arrays and extensible
      semantics. Lua is dynamically typed, runs by interpreting bytecode
      for a register-based virtual machine, and has automatic memory
      management with incremental garbage collection, making it ideal
      for configuration, scripting, and rapid prototyping.
    '';
    license = stdenv.lib.licenses.mit;
    platforms = stdenv.lib.platforms.unix;
  };
}