these 2 derivations will be built:
  /nix/store/d0jkc4iz3zavw2x1y9jx2jg566a3bdy1-closure-info.drv
  /nix/store/6m85c2wm4pkwbpvlin2k5xdqpb7briv8-check-vars.drv
error: path '/nix/store/j5a7xn4kw1kr0i8j7zw5w38ng24rnrfj-check-vars' is not valid
error: Cannot build '/nix/store/6m85c2wm4pkwbpvlin2k5xdqpb7briv8-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/j5a7xn4kw1kr0i8j7zw5w38ng24rnrfj-check-vars