add rust-overlay to config for easy rustc retrieval

flake.lock

@@ -457,7 +457,28 @@
         "nixpkgs": "nixpkgs_5",
         "nixpkgs-unstable": "nixpkgs-unstable",
         "nordvpn-flake": "nordvpn-flake",
-        "nur": "nur"
+        "nur": "nur",
+        "rust-overlay": "rust-overlay"
+      }
+    },
+    "rust-overlay": {
+      "inputs": {
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1786507911,
+        "narHash": "sha256-w5aZRLbiu7H6TqsYXVMdRKg0S4DRaJpxyqxx86AwxVk=",
+        "owner": "oxalica",
+        "repo": "rust-overlay",
+        "rev": "39db48099ad16834af7e27485a4babf9c28b3897",
+        "type": "github"
+      },
+      "original": {
+        "owner": "oxalica",
+        "repo": "rust-overlay",
+        "type": "github"
       }
     },
     "rust-overlays": {

flake.nix

@@ -16,13 +16,17 @@
       url = "github:nix-community/emacs-overlay";
       inputs.nixpkgs.follows = "nixpkgs";
     };
+    rust-overlay = {
+      url = "github:oxalica/rust-overlay";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
     apple-fonts.url = "github:Lyndeno/apple-fonts.nix";
     duralumin.url = "git+https://git.nirgendwo.xyz/janis/duralumin.git";
     nordvpn-flake.url = "github:janis-bhm/nordvpn-flake";
     nordvpn-flake.inputs.nixpkgs.follows = "nixpkgs";
   };
 
-  outputs = inputs @ { disko, nixpkgs, nixos-wsl, nixpkgs-unstable, home-manager, duralumin, emacs-overlay, nordvpn-flake, ... }:
+  outputs = inputs @ { disko, nixpkgs, nixos-wsl, nixpkgs-unstable, home-manager, duralumin, emacs-overlay, rust-overlay, nordvpn-flake, ... }:
     let
       system = "x86_64-linux";
       overlay-unstable = final: prev: {
@@ -68,6 +72,7 @@
           overlays = [
             inputs.nur.overlays.default
             emacs-overlay.overlays.default
+            rust-overlay.overlays.default
             nordvpn-flake.overlays.default
             overlay-unstable
             duralumin.overlays.default