these 2 derivations will be built:
  /nix/store/l6q1vki34sr4wgrf9sans9lrqb42ds6z-closure-info.drv
  /nix/store/07m32wbyw9c6m7lhjz4k0ln3f52h28jk-check-vars.drv
error: path '/nix/store/ab3ah4wg3z9db5d5208mkn8xlbvj8z5s-check-vars' is not valid
error: Cannot build '/nix/store/07m32wbyw9c6m7lhjz4k0ln3f52h28jk-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/ab3ah4wg3z9db5d5208mkn8xlbvj8z5s-check-vars