switch to nixVersions?

flake.lock

@@ -5,11 +5,11 @@
         "nixpkgs": "nixpkgs"
       },
       "locked": {
-        "lastModified": 1714485953,
-        "narHash": "sha256-v6KYvjSdSPI0okx772Yuq7Pj23ng6kBzTI6uUD+M57Y=",
+        "lastModified": 1714602995,
+        "narHash": "sha256-nX91QLYrdUYiVsJ+I6FTD+HLYJXHyoRYiZr6Lho+/6k=",
         "owner": "daylinmorgan",
         "repo": "f1multiviewer-flake",
-        "rev": "0e2225d43eef6e28295554236d0ab079389f8485",
+        "rev": "b30f5eb20edc9cf260b8b1731454b6a479b91d33",
         "type": "github"
       },
       "original": {
@@ -489,11 +489,11 @@
     },
     "nixpkgs_4": {
       "locked": {
-        "lastModified": 1714314149,
-        "narHash": "sha256-yNAevSKF4krRWacmLUsLK7D7PlfuY3zF0lYnGYNi9vQ=",
+        "lastModified": 1714656196,
+        "narHash": "sha256-kjQkA98lMcsom6Gbhw8SYzmwrSo+2nruiTcTZp5jK7o=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "cf8cc1201be8bc71b7cbbbdaf349b22f4f99c7ae",
+        "rev": "94035b482d181af0a0f8f77823a790b256b7c3cc",
         "type": "github"
       },
       "original": {

modules/nix.nix

@@ -9,7 +9,7 @@
   ];
 
   nixpkgs.config.allowUnfree = true;
-  nix.package = pkgs.nixUnstable;
+  nix.package = pkgs.nixVersions.latest;
   nix.extraOptions = ''
     experimental-features = nix-command flakes
   '';
@@ -21,10 +21,9 @@
     options = "--delete-older-than 7d";
   };
 
-  environment.systemPackages = with pkgs; [
-    nixd
-    nixfmt-rfc-style
-
+  environment.systemPackages = [
+    pkgs.nixd
+    pkgs.nixfmt-rfc-style
     self.packages.${pkgs.system}.default
     inputs.pinix.packages.${pkgs.system}.default
   ];