release-cross: Expose sub-jobs of linux cross stdenv

pkgs/top-level/release-cross.nix

@@ -8,7 +8,7 @@
 with import ./release-lib.nix { inherit supportedSystems scrubJobs; };
 
 let
-  lib = import ../../lib;
+  inherit (pkgs) lib;
 
   nativePlatforms = linux;
 
@@ -192,7 +192,7 @@ in
   /* Cross-built bootstrap tools for every supported platform */
   bootstrapTools = let
     tools = import ../stdenv/linux/make-bootstrap-tools-cross.nix { system = "x86_64-linux"; };
-    maintainers = [ pkgs.lib.maintainers.dezgeg ];
-    mkBootstrapToolsJob = bt: hydraJob' (pkgs.lib.addMetaAttrs { inherit maintainers; } bt.dist);
-  in pkgs.lib.mapAttrs (name: mkBootstrapToolsJob) tools;
+    maintainers = [ lib.maintainers.dezgeg ];
+    mkBootstrapToolsJob = drv: hydraJob' (lib.addMetaAttrs { inherit maintainers; } drv);
+  in lib.mapAttrsRecursiveCond (as: !lib.isDerivation as) (name: mkBootstrapToolsJob) tools;
 }