tvl-depot/tests/lang/eval-okay-listtoattrs.nix
2010-03-31 13:35:29 +00:00

10 lines
436 B
Nix

# this test shows how to use listToAttrs and that evaluation is still lazy (throw isn't called)
with import ./lib.nix;
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")) ];
in concat (map (x: x.a) r.result)