use rust-overlay

flake.lock

@@ -2,11 +2,11 @@
   "nodes": {
     "nixpkgs": {
       "locked": {
-        "lastModified": 1775373274,
-        "narHash": "sha256-rL4F2+/ixLRzbgewGRpxTqfQNmaHi+VbLTkUcedyZRw=",
+        "lastModified": 1775403759,
+        "narHash": "sha256-cGyKiTspHEUx3QwAnV3RfyT+VOXhHLs+NEr17HU34Wo=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "bd48fcede9287ff448ecc84c4e94a4fca4bd0d72",
+        "rev": "5e11f7acce6c3469bef9df154d78534fa7ae8b6c",
         "type": "github"
       },
       "original": {
@@ -18,7 +18,28 @@
     },
     "root": {
       "inputs": {
-        "nixpkgs": "nixpkgs"
+        "nixpkgs": "nixpkgs",
+        "rust-overlay": "rust-overlay"
+      }
+    },
+    "rust-overlay": {
+      "inputs": {
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1775445266,
+        "narHash": "sha256-3fgIj85WHQbOamrpIw9WY3ZL1PoEvjPOjmzMYNsEQJo=",
+        "owner": "oxalica",
+        "repo": "rust-overlay",
+        "rev": "61747bc3cf2da179b9af356ae9e70f3b895b0c24",
+        "type": "github"
+      },
+      "original": {
+        "owner": "oxalica",
+        "repo": "rust-overlay",
+        "type": "github"
       }
     }
   },