these 3 derivations will be built:
  /nix/store/04j418829410kq7v510w728yrb7jmzx0-clan-cli-source.drv
  /nix/store/jpcdsc91p8alawv9xh58v3y05gs6fxw5-clan-cli.drv
  /nix/store/yj1dgr2d85b9lf5hmgif2qp3hcmd7gn7-nix-shell.drv