diff --git a/shell.nix b/shell.nix
index 180e8957d..9e7bce9b4 100644
--- a/shell.nix
+++ b/shell.nix
@@ -4,6 +4,8 @@ pkgs.mkShell {
   nativeBuildInputs = with pkgs; [
     (rust-bin.stable.latest.default.override { extensions = ["rust-src"]; })
     lld_10
+    lldb
+    # pythonPackages.six
     stdenv.cc.cc.lib
     # pkg-config
   ];