Build Caddy with cloudflare as overlay

flake.lock

@@ -241,6 +241,22 @@
         "type": "github"
       }
     },
+    "nixpkgs-unstable": {
+      "locked": {
+        "lastModified": 1726463316,
+        "narHash": "sha256-gI9kkaH0ZjakJOKrdjaI/VbaMEo9qBbSUl93DnU7f4c=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "99dc8785f6a0adac95f5e2ab05cc2e1bf666d172",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
     "root": {
       "inputs": {
         "agenix": "agenix",
@@ -248,7 +264,8 @@
         "home-manager": "home-manager_2",
         "lix-module": "lix-module",
         "nixos-hardware": "nixos-hardware",
-        "nixpkgs": "nixpkgs"
+        "nixpkgs": "nixpkgs",
+        "nixpkgs-unstable": "nixpkgs-unstable"
       }
     },
     "stable": {