these 5 derivations will be built:
  /nix/store/qlgk9l9w8g80ailj0zfymiradpd2xdb7-clan-runtime.drv
  /nix/store/4gvjn0wv72kib4p4j363fq5v44fz07im-clan-cli-source.drv
  /nix/store/4whcm945rrwi0hhg3k3f6qyri6aaa8zg-closure-info.drv
  /nix/store/mnd9aqw9hj2sgnycj0yhspx0ik5vmvl0-clan-cli.drv
  /nix/store/7551nm4vbhyh890fd0f013qzlhwgzawb-check-vars.drv
error: path '/nix/store/byjhd1fplhgasam4k4cji3ssyc7k51bj-check-vars' is not valid
error: Cannot build '/nix/store/7551nm4vbhyh890fd0f013qzlhwgzawb-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/byjhd1fplhgasam4k4cji3ssyc7k51bj-check-vars