these 2 derivations will be built:
  /nix/store/agaw2x5ibzyn0qnqgksrm8xy6ky0hmx7-closure-info.drv
  /nix/store/dhnnmxjspkc8s72whxqrk7rny2ch4768-check-vars.drv
error: path '/nix/store/clrgz8bnc8s77mpjk00vcgq9v5gkrslr-check-vars' is not valid
error: Cannot build '/nix/store/dhnnmxjspkc8s72whxqrk7rny2ch4768-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/clrgz8bnc8s77mpjk00vcgq9v5gkrslr-check-vars