better rust

modules/nixos/packages/rust.nix

@@ -1,8 +1,21 @@
-{ pkgs, ... }:
+{ pkgs, inputs, ... }:
+let
+  rustToolchain = pkgs.rust-bin.stable.latest.default.override {
+    extensions = [
+      "rust-src"
+      "rustfmt"
+    ];
+  };
+in
 {
+  nixpkgs.overlays = [ inputs.rust-overlay.overlays.default ];
+
   environment.systemPackages = with pkgs; [
+    rustToolchain
+    clang
+    lld
+    pkg-config
+    openssl
     rust-analyzer
-    rustfmt
-    rustup
   ];
 }