# this test shows how to use listToAttrs and that evaluation is still lazy (throw isn't called)
let
  asi = name: value : { inherit name value; };
  list = [ ( asi "a" "A" ) ( asi "b" "B" ) ];
  a = builtins.listToAttrs list;
  b = builtins.listToAttrs ( list ++ list );
  r = builtins.listToAttrs [ (asi "result" [ a b ]) ( asi "throw" (throw "this should not be thrown")) ];
  x = builtins.listToAttrs [ (asi "foo" "bar") (asi "foo" "bla") ];
in
builtins.concatStringsSep "" (map (x: x.a) r.result) + x.foo
