Update

flake.nix

@@ -13,7 +13,9 @@
         # Provides a `rustToolchain` attribute for Nixpkgs that we can use to
         # create a Rust environment
         (self: super: {
-          rustToolchain = super.rust-bin.stable.latest.default;
+          rustToolchain = super.rust-bin.stable.latest.default.override {
+            extensions = [ "rust-src" "rustfmt" "rust-analyzer" ];
+          };
         })
       ];
 
@@ -40,6 +42,31 @@
           ]);
         };
 
+        rust-llvm = pkgs.mkShell {
+          # The Nix packages provided in the environment
+          packages = (with pkgs; [
+            # The package provided by our custom overlay. Includes cargo, Clippy, cargo-fmt,
+            # rustdoc, rustfmt, and other tools.
+            rustToolchain
+
+            python311
+            cmake
+            ninja
+            libffi
+          ]) ++ (with pkgs.llvmPackages_16; [
+            libllvm
+            clang
+            libclang
+
+            # This is the real lld package
+            bintools
+          ]);
+
+          # Need this to fix rust-bindgen
+          LIBCLANG_PATH="${pkgs.llvmPackages_16.libclang.lib}/lib";
+          BINDGEN_EXTRA_CLANG_ARGS = "-isystem ${pkgs.llvmPackages_16.libclang.lib}/lib/clang/${nixpkgs.lib.getVersion pkgs.llvmPackages_16.clang}/include";
+        };
+
         latex = pkgs.mkShell {
           packages = (with pkgs; [
             texlive.combined.scheme-full