these 2 derivations will be built:
  /nix/store/8ss9djaqch9xflrz9sjwic4c66jbyl62-closure-info.drv
  /nix/store/rsf7ln1l0rn5s0nrfwi5097sk43g4x5y-check-vars.drv
error: path '/nix/store/1scpq41zvp1nsygqp5mq4wg59qm43h15-check-vars' is not valid
error: Cannot build '/nix/store/rsf7ln1l0rn5s0nrfwi5097sk43g4x5y-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/1scpq41zvp1nsygqp5mq4wg59qm43h15-check-vars