lcalc: 2.0.5 -> 2.1.0 (#372820)

diff --git a/src/libLfunction/Lcomplex.h b/src/libLfunction/Lcomplex.h

index 363bbf4..ffecd70 100644

--- a/src/libLfunction/Lcomplex.h

+++ b/src/libLfunction/Lcomplex.h

@@ -56,8 +56,11 @@

 #include <cmath>

 #include <sstream>

-namespace std

-{

+#ifdef _LIBCPP_VERSION

+_LIBCPP_BEGIN_NAMESPACE_STD

+#else

+namespace std {

+#endif

   // Forward declarations

   template<typename _Tp> class complex;

   template<> class complex<float>;

@@ -1193,6 +1196,10 @@ namespace std

   inline

   complex<long double>::complex(const complex<double>& __z)

   : _M_value(_ComplexT(__z._M_value)) { }

-} // namespace std

+#ifdef _LIBCPP_VERSION

+_LIBCPP_END_NAMESPACE_STD

+#else

+}

+#endif

 #endif	/* _CPP_COMPLEX */

}:

stdenv.mkDerivation rec {

  version = "2.0.5";

  version = "2.1.0";

  pname = "lcalc";

  src = fetchFromGitLab {

    owner = "sagemath";

    repo = pname;

    rev = version;

    hash = "sha256-RxWZ7T0I9zV7jUVnL6jV/PxEoU32KY7Q1UsOL5Lonuc=";

    tag = version;

    hash = "sha256-v+7Uh6tPOfb3E9dqxx//RqD22XM4S/8ejS2v+D5G5pE=";

  };

  # workaround for vendored GCC <complex> on libc++

  # https://gitlab.com/sagemath/lcalc/-/issues/16

  patches = [ ./libcxx-compat.patch ];

  nativeBuildInputs = [

    autoreconfHook

    gengetopt