config: add hydraJobs to the outputs

README.adoc

@@ -122,6 +122,8 @@ This mainly uses the link:./hosts/[hosts configuration].
 * `templates` which contains my templates.
 Though, these are just templates mostly for my own purposes so it is not as useful as the other outputs.
 
+* `hydraJobs` contains link:https://github.com/NixOS/hydra[Hydra] build jobs where it is primarily used for my test Hydra instance.
+
 * `lib` is defined from link:./lib/[my custom library].
 It mainly assumes it is to be included in nixpkgs standard library (i.e., `import ./lib { lib = inputs.nixpkgs.lib; }`).
 It's another unnecessary export but it's there.

flake.nix

@@ -412,5 +412,22 @@
       checks = lib'.mapAttrs
         (system: deployLib: deployLib.deployChecks self.deploy)
         inputs.deploy.lib;
+
+      # I'm cut off from the rest of my setup with no Hydra instance yet but
+      # I'm sure it will grow some of them as long as you didn't put it under a
+      # rock.
+      hydraJobs =
+        lib'.mapAttrs'
+          (name: config:
+            lib'.nameValuePair "nixos-${name}" config.config.system.build.toplevel)
+          self.nixosConfigurations
+        // lib'.mapAttrs'
+          (name: config:
+            lib'.nameValuePair "home-manager-${name}" config.activationPackage)
+          self.homeManagerConfigurations
+        // {
+          build-packages = forAllSystems (system:
+            self.packages.${system});
+        };
     };
 }