these 2 derivations will be built:
  /nix/store/iyi5q0f6ig7wxmqpndkjfjsn4lxk2yds-closure-info.drv
  /nix/store/2bzhd2g4vpky0knz1amrbskd8jd1ypim-check-vars.drv
error: path '/nix/store/35zkpjmr1vg7jz4xvp6fyrv78ysnlhdw-check-vars' is not valid
error: Cannot build '/nix/store/2bzhd2g4vpky0knz1amrbskd8jd1ypim-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/35zkpjmr1vg7jz4xvp6fyrv78ysnlhdw-check-vars