nix: skip the Darwin input

ref: b0721be0c6

flake.lock

@@ -2,7 +2,7 @@
   "nodes": {
     "agenix": {
       "inputs": {
-        "darwin": "darwin",
+        "darwin": [],
         "nixpkgs": [
           "nixpkgs"
         ]
@@ -91,28 +91,6 @@
         "type": "github"
       }
     },
-    "darwin": {
-      "inputs": {
-        "nixpkgs": [
-          "agenix",
-          "nixpkgs"
-        ]
-      },
-      "locked": {
-        "lastModified": 1673295039,
-        "narHash": "sha256-AsdYgE8/GPwcelGgrntlijMg4t3hLFJFCRF3tL5WVjA=",
-        "owner": "lnl7",
-        "repo": "nix-darwin",
-        "rev": "87b9d090ad39b25b2400029c64825fc2a8868943",
-        "type": "github"
-      },
-      "original": {
-        "owner": "lnl7",
-        "ref": "master",
-        "repo": "nix-darwin",
-        "type": "github"
-      }
-    },
     "editorconfig-nvim": {
       "flake": false,
       "locked": {

flake.nix

@@ -8,6 +8,7 @@
     agenix = {
       url = "github:ryantm/agenix";
       inputs.nixpkgs.follows = "nixpkgs";
+      inputs.darwin.follows = "";
     };
 
     home-manager = {