hydra: add hydrajobs to flake-parts

modules/flake-parts/host-machines.nix

@@ -34,4 +34,14 @@ in
       }
     ))
   ];
+
+  flake.hydraJobs =
+    let
+      self = inputs.self;
+    in
+    {
+      # hosts = lib.mapAttrs (_: cfg: cfg.config.system.build.toplevel) self.outputs.nixosConfigurations;
+      packages = self.packages;
+      shells = lib.filterAttrs (name: shell: name == "x86_64-linux") self.devShells;
+    };
 }