these 4 derivations will be built:
  /nix/store/04j418829410kq7v510w728yrb7jmzx0-clan-cli-source.drv
  /nix/store/d3c3n64w45mlm3dnir7h02xl3plhgzh4-closure-info.drv
  /nix/store/jpcdsc91p8alawv9xh58v3y05gs6fxw5-clan-cli.drv
  /nix/store/jakxaj7c9smh5r4n935q9ly17gvc4jkk-check-vars.drv