these 2 derivations will be built:
  /nix/store/bcvly00hm7yz3swkrd801rxjhf04an20-closure-info.drv
  /nix/store/v73zj2xq1lfwhjj5s3jz7rbh1l8wdksd-check-vars.drv
error: path '/nix/store/cq1ixrbngw7nqxm5zibg1h1mgqgnf7dr-check-vars' is not valid
error: Cannot build '/nix/store/v73zj2xq1lfwhjj5s3jz7rbh1l8wdksd-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/cq1ixrbngw7nqxm5zibg1h1mgqgnf7dr-check-vars