these 2 derivations will be built:
  /nix/store/05kx6z0dc1780n02i9h6yikc7h74aawb-closure-info.drv
  /nix/store/k1i6bk3yzl6cb8x0srf2fkwwxxdabj0w-check-vars.drv
error: path '/nix/store/gccaq8k9ai5kp4lz8gri8ffqfnsmw7sv-check-vars' is not valid
error: Cannot build '/nix/store/k1i6bk3yzl6cb8x0srf2fkwwxxdabj0w-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/gccaq8k9ai5kp4lz8gri8ffqfnsmw7sv-check-vars