anchor.diff:  { pkgs
  +, linuxKernel
   , config
   , buildPackages
   , callPackage
  
positive.code:     linux_rpi4 = packagesFor kernels.linux_rpi4;
    };
  
    packages = vanillaPackages // rtPackages // rpiPackages // {
      linux_mptcp_95 = packagesFor kernels.linux_mptcp_95;
  
      # Intentionally lacks recurseIntoAttrs, as -rc kernels will quite likely break out-of-tree modules and cause failed Hydra builds.
  
negative.code:     linux_libre = recurseIntoAttrs (packagesFor kernels.linux_libre);
  
      linux_latest_libre = recurseIntoAttrs (packagesFor kernels.linux_latest_libre);
    });
  
    packageAliases = {
      linux_default = packages.linux_5_10;
  