feat(flake): add nix-index input

flake.lock

@@ -561,6 +561,26 @@
         "type": "github"
       }
     },
+    "nix-index-db": {
+      "inputs": {
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1717297675,
+        "narHash": "sha256-43UmlS1Ifx17y93/Vc258U7bOlAAIZbu8dsGDHOIIr0=",
+        "owner": "nix-community",
+        "repo": "nix-index-database",
+        "rev": "972a52bee3991ae1f1899e6452e0d7c01ee566d9",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "repo": "nix-index-database",
+        "type": "github"
+      }
+    },
     "nix-on-droid": {
       "inputs": {
         "home-manager": [
@@ -920,6 +940,7 @@
         "nh": "nh",
         "nil": "nil",
         "nix-colors": "nix-colors",
+        "nix-index-db": "nix-index-db",
         "nix-on-droid": "nix-on-droid",
         "nixarr": "nixarr",
         "nixpkgs": "nixpkgs_7",