make all inputs follow nixpkgs

flake.lock

@@ -38,7 +38,9 @@
       "inputs": {
         "fenix": "fenix",
         "flake-utils": "flake-utils",
-        "nixpkgs": "nixpkgs_2"
+        "nixpkgs": [
+          "nixpkgs"
+        ]
       },
       "locked": {
         "lastModified": 1659395338,
@@ -253,21 +255,6 @@
       }
     },
     "nixpkgs_2": {
-      "locked": {
-        "lastModified": 1659219666,
-        "narHash": "sha256-pzYr5fokQPHv7CmUXioOhhzDy/XyWOIXP4LZvv/T7Mk=",
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "7b9be38c7250b22d829ab6effdee90d5e40c6e5c",
-        "type": "github"
-      },
-      "original": {
-        "id": "nixpkgs",
-        "ref": "nixos-unstable",
-        "type": "indirect"
-      }
-    },
-    "nixpkgs_3": {
       "locked": {
         "lastModified": 1670543317,
         "narHash": "sha256-4mMR56rtxKr+Gwz399jFr4i76SQZxsLWxxyfQlPXRm0=",
@@ -355,7 +342,7 @@
         "hyprland": "hyprland",
         "material-wifi-icons": "material-wifi-icons",
         "nil-lsp": "nil-lsp",
-        "nixpkgs": "nixpkgs_3",
+        "nixpkgs": "nixpkgs_2",
         "nixpkgs-unstable": "nixpkgs-unstable",
         "nur": "nur",
         "plymouth-themes": "plymouth-themes",

flake.nix

@@ -42,7 +42,10 @@
     agenix.url = "github:ryantm/agenix";
 
     # my stuff
-    dhist.url = "github:lelgenio/dhist";
+    dhist = {
+      url = "github:lelgenio/dhist";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
   };
   outputs = inputs@{ nixpkgs, nixpkgs-unstable, home-manager, nur, ... }:
     let