rPackages.ChemmineOB: fix compile error

    sphereTessellation = with pkgs; [ gmp.dev mpfr.dev ];

    vapour = with pkgs; [ proj.dev gdal ];

    MedianaDesigner = [ pkgs.zlib.dev ];

    ChemmineOB = [ pkgs.eigen ];

    ChemmineOB = with pkgs; [ eigen openbabel ];

    DGP4LCF = [ pkgs.lapack pkgs.blas ];

  };

      PKGCONFIG_LIBS = "-Wl,-rpath,${lib.getLib pkgs.openssl}/lib -L${lib.getLib pkgs.openssl}/lib -L${pkgs.cyrus_sasl.out}/lib -L${pkgs.zlib.out}/lib -lssl -lcrypto -lsasl2 -lz";

    });

    ChemmineOB = let

      # R package doesn't compile with the latest (unstable) version.

      # Override from nixpkgs-23.11

      openbabel3 = pkgs.openbabel.overrideAttrs (attrs: {

        version = "3.1.1";

        src = pkgs.fetchFromGitHub {

          owner = "openbabel";

          repo = "openbabel";

          rev = "openbabel-${lib.replaceStrings ["."] ["-"] attrs.version}";

          sha256 = "sha256-wQpgdfCyBAoh4pmj9j7wPTlMtraJ62w/EShxi/olVMY=";

        };

      });

    in

    old.ChemmineOB.overrideAttrs (attrs: {

    ChemmineOB = old.ChemmineOB.overrideAttrs (attrs: {

      # pkg-config knows openbabel-3 without the .0

      # Eigen3 is also looked for in the wrong location

      # pointer was changed in newer version of openbabel:

      #   https://github.com/openbabel/openbabel/commit/305a6fd3183540e4a8ae1d79d10bf1860e6aa373

      postPatch = ''

        substituteInPlace configure \

          --replace-fail openbabel-3.0 openbabel-3

        substituteInPlace src/Makevars.in \

          --replace-fail "-I/usr/include/eigen3" "-I${pkgs.eigen}/include/eigen3"

        substituteInPlace src/ChemmineOB.cpp \

          --replace-fail "obsharedptr<" "std::shared_ptr<"

      '';

      buildInputs = attrs.buildInputs ++ [openbabel3];

      # copied from fastnlo-toolkit:

      # None of our currently packaged versions of swig are C++17-friendly

      # Use a workaround from https://github.com/swig/swig/issues/1538

      env = (attrs.env or { }) // {

        NIX_CFLAGS_COMPILE = (attrs.env.NIX_CFLAGS_COMPILE or "") + lib.optionalString stdenv.hostPlatform.isDarwin " -D_LIBCPP_ENABLE_CXX17_REMOVED_FEATURES";

      };

    });

    ps = old.ps.overrideAttrs (attrs: {