these 2 derivations will be built:
  /nix/store/8s86d0nsygzmr35jhil94gxxw2sp2hsd-closure-info.drv
  /nix/store/8ri6nfvmsnlghcsis9b5iycv0574gyaw-check-vars.drv
error: path '/nix/store/dd2y4qx52gbpqj7p3g8brdd3zlxxmf6c-check-vars' is not valid
error: Cannot build '/nix/store/8ri6nfvmsnlghcsis9b5iycv0574gyaw-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/dd2y4qx52gbpqj7p3g8brdd3zlxxmf6c-check-vars