add hydra job

flake.nix

@@ -34,15 +34,7 @@
         pkgs,
         lib,
         ...
-      }: let
+      }: {
-        heroicons = pkgs.fetchFromGitHub {
-          owner = "tailwindlabs";
-          repo = "heroicons";
-          rev = "v2.1.1";
-          hash = "sha256-y/kY8HPJmzB2e7ErgkUdQijU7oUhfS3fI093Rsvyvqs=";
-          sparseCheckout = ["optimized"];
-        };
-      in {
         # Define a consistent package set for development, testing, and
         # production.
         _module.args.pkgs = import nixpkgs {
@@ -62,6 +54,11 @@
           ];
         };
 
+        # Add hydraJob for x86_64-linux
+        hydraJobs = lib.optionalAttrs (system == "x86_64-linux") {
+          default = self.packages.${system}.default;
+        };
+
         # You can build your Elixir application using mixRelease.
         packages.default = pkgs.beamPackages.mixRelease {
           pname = "zoeys-computer";