add sops-nix to inputs

flake.lock

@@ -195,6 +195,22 @@
         "type": "github"
       }
     },
+    "nixpkgs-stable_2": {
+      "locked": {
+        "lastModified": 1730602179,
+        "narHash": "sha256-efgLzQAWSzJuCLiCaQUCDu4NudNlHdg2NzGLX5GYaEY=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "3c2f1c4ca372622cb2f9de8016c9a0b1cbd0f37c",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "release-24.05",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
     "nixpkgs_2": {
       "locked": {
         "lastModified": 1730531603,
@@ -249,7 +265,8 @@
         "nixos-cosmic": "nixos-cosmic",
         "nixos-wsl": "nixos-wsl",
         "nixpkgs": "nixpkgs_4",
-        "snowfall-lib": "snowfall-lib"
+        "snowfall-lib": "snowfall-lib",
+        "sops-nix": "sops-nix"
       }
     },
     "rust-overlay": {
@@ -295,6 +312,27 @@
         "type": "github"
       }
     },
+    "sops-nix": {
+      "inputs": {
+        "nixpkgs": [
+          "nixpkgs"
+        ],
+        "nixpkgs-stable": "nixpkgs-stable_2"
+      },
+      "locked": {
+        "lastModified": 1730883027,
+        "narHash": "sha256-pvXMOJIqRW0trsW+FzRMl6d5PbsM4rWfD5lcKCOrrwI=",
+        "owner": "mic92",
+        "repo": "sops-nix",
+        "rev": "c5ae1e214ff935f2d3593187a131becb289ea639",
+        "type": "github"
+      },
+      "original": {
+        "owner": "mic92",
+        "repo": "sops-nix",
+        "type": "github"
+      }
+    },
     "systems": {
       "locked": {
         "lastModified": 1681028828,