Tested hydra job to control release of channel (has to build okay)

release.nix

@@ -89,26 +89,41 @@ in let
     in
       nixpkgs;
 
-in {
-
-  # Tweak the nixos make-channel code to include the upstream channel.
+  # jobs - The jobs hydra is to run.
   #
-  # 1. Replace the git repo nixpkgs with a copy of the unpacked nixpkgs channel.
-  #
-  channel =
-    ( import (nixpkgsGit + /nixos/lib/make-channel.nix) {
-        inherit pkgs version versionSuffix;
-        nixpkgs = ccpkgsGit;
-    } ).overrideAttrs ( original: {
-        name = "ccpkgs-channel";
-        distPhase =
-          ''
-            rm -fr upstream
-            cp -rd ${nixpkgs}/nixos-${version} upstream
-          '' + original.distPhase;
-    } );
+  jobs = {
+    # Tweak the nixos make-channel code to include the upstream channel.
+    #
+    # 1. Replace the git repo nixpkgs with a copy of the unpacked nixpkgs channel.
+    #
+    channel =
+      ( import (nixpkgsGit + /nixos/lib/make-channel.nix) {
+          inherit pkgs version versionSuffix;
+          nixpkgs = ccpkgsGit;
+      } ).overrideAttrs ( original: {
+          name = "ccpkgs-channel";
+          distPhase =
+            ''
+              rm -fr upstream
+              cp -rd ${nixpkgs}/nixos-${version} upstream
+            '' + original.distPhase;
+      } );
+
+    # tested - Aggregate package set required to built for automatic channel release
+    #
+    tested = pkgs.lib.hydraJob (pkgs.releaseTools.aggregate {
+      name = "ccpkgs-${version}";
+
+      constituents =
+           builtins.attrValues jobs.pkgs
+        ++ builtins.attrValues jobs.temporary;
+
+      meta = {
+        description = "Release-critical builds for the ccpkgs channel";
+        maintainers = with pkgs.lib.maintainers; [ ];
+      };
+    });
 
-  overlays = {
     # pkgs - Attribute set of overlayed pkgs.
     #
     pkgs =
@@ -123,4 +138,5 @@ in {
       ( map ( name: { inherit name; value = pkgs.${name}; } )
           ( builtins.attrNames ( import ./temporary/all-temporary.nix { } { } ) ) );
   };
-}
+
+in jobs