these 2 derivations will be built:
  /nix/store/2rziyzr9059gg5sdxh2i6idcsrcg2wh0-closure-info.drv
  /nix/store/2rx3r5rcvhbymjdzy68hc4fslqz1aryz-check-vars.drv
error: path '/nix/store/7sckbnw2kb5x9g8czsxak7p8wjypq39g-check-vars' is not valid
error: Cannot build '/nix/store/2rx3r5rcvhbymjdzy68hc4fslqz1aryz-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/7sckbnw2kb5x9g8czsxak7p8wjypq39g-check-vars