these 2 derivations will be built:
  /nix/store/kal7gi0jjrjwvss0kbcs2gj9z3kba15d-closure-info.drv
  /nix/store/3xph86x30vqsmxzpk1knivcg6igq1x13-check-vars.drv
error: path '/nix/store/grmsmxqpwdjcrdqcnji4la99vpnrr0xc-check-vars' is not valid
error: Cannot build '/nix/store/3xph86x30vqsmxzpk1knivcg6igq1x13-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/grmsmxqpwdjcrdqcnji4la99vpnrr0xc-check-vars