these 4 derivations will be built:
  /nix/store/7hr7f3z6nqlj3a83h9f3jrhph9iwc93k-closure-info.drv
  /nix/store/jmipjmf8dy34zf2bgzqciawd4nq0lfhw-clan-cli-source.drv
  /nix/store/xm9g1q5312b4zgxdcf2v2h0qxf9zr5gl-clan-cli.drv
  /nix/store/l3bq209aifbqa81mvcq90wccznc1yc3s-check-vars.drv
error: path '/nix/store/34zi9v3xqdjb6d14yshfxf684l1krxnw-check-vars' is not valid
error: Cannot build '/nix/store/l3bq209aifbqa81mvcq90wccznc1yc3s-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/34zi9v3xqdjb6d14yshfxf684l1krxnw-check-vars