minimal-bootstrap: rebase onto master

  derivationWithMeta = attrs:

    let

      passthru = attrs.passthru or {};

      validity = checkMeta { inherit attrs; };

      inherit (validity) meta;

      validity = checkMeta.assertValidity { inherit meta attrs; };

      meta = checkMeta.commonMeta { inherit validity attrs; };

    in

    lib.extendDerivation

      validity.handled