these 2 derivations will be built:
  /nix/store/nr1y47ba0bc4pbidkqhsv9sjsg0a6l90-closure-info.drv
  /nix/store/g5lzm0gkl4v1xb12zd2lkm0dj820m3g2-check-vars.drv
error: path '/nix/store/6djb69svawvnvlkn7laymgi5wkcj7j2y-check-vars' is not valid
error: Cannot build '/nix/store/g5lzm0gkl4v1xb12zd2lkm0dj820m3g2-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/6djb69svawvnvlkn7laymgi5wkcj7j2y-check-vars