[vega] Moves to unstable to fix issues building hy3

flake.nix

@@ -9,6 +9,13 @@
       url = "github:nix-community/home-manager?ref=release-25.05";
       inputs.nixpkgs.follows = "nixpkgs";
     };
+    nixpkgs-unstable = {
+      url = "github:nixos/nixpkgs?ref=nixos-unstable";
+    };
+    home-manager-unstable = {
+      url = "github:nix-community/home-manager";
+      inputs.nixpkgs.follows = "nixpkgs-unstable";
+    };
     sops-nix = {
       url = "github:Mic92/sops-nix";
       inputs.nixpkgs.follows = "nixpkgs";
@@ -24,12 +31,12 @@
           path,
           system ? "x86_64-linux",
           nixpkgs ? inputs.nixpkgs,
-          homemanager ? inputs.home-manager,
+          home-manager ? inputs.home-manager,
         }:
         nixpkgs.lib.nixosSystem {
           inherit system;
           modules = [
-            homemanager.nixosModules.home-manager
+            home-manager.nixosModules.home-manager
             {
               home-manager.useGlobalPkgs = true;
               home-manager.useUserPackages = true;
@@ -51,6 +58,8 @@
         };
         vega = mkNixosConfig {
           path = ./system/hosts/vega;
+          nixpkgs = inputs.nixpkgs-unstable;
+          home-manager = inputs.home-manager-unstable;
         };
         mcp = mkNixosConfig {
           path = ./system/hosts/mcp;