nixos: Make system.build a lazyAttrsOf unspecified

roberth · roberth · commit 4014fb6a64bc · 2021-12-17T14:42:44.000+01:00
Legacy types.attrs has really bad merging behavior and does not
support priorities.

f build
diff --git a/nixos/modules/system/activation/top-level.nix b/nixos/modules/system/activation/top-level.nix
@@ -148,7 +148,7 @@ in
     system.build = mkOption {
       internal = true;
       default = {};
-      type = types.attrs;
+      type = types.lazyAttrsOf types.unspecified;
       description = ''
         Attribute set of derivations used to setup the system.
       '';
