By: Michael Lynch <git@mtlynch.io>
Keep project-specific cache targets out of the shared build script Run the optional upload hook without arguments so projects sharing the build-all wrapper can choose their own upload targets. Let this project's hook select checks.<system>.all and resolve its repository root so direct invocations work from other directories. Use linkFarm's package-set interface for the aggregate check. The pinned nixpkgs produces the same derivation without mapping the attributes first.