with import <stockholm/lib>; self: super: let # This callPackage will try to detect obsolete overrides. callPackage = path: args: let override = self.callPackage path args; upstream = optionalAttrs (override ? "name") (super.${(parseDrvName override.name).name} or {}); in if upstream ? "name" && override ? "name" && compareVersions upstream.name override.name != -1 then trace "Upstream `${upstream.name}' gets overridden by `${override.name}'." override else override; in mapNixDir (path: callPackage path {}) ./.