these 4 derivations will be built:
  /nix/store/9lxk21cx970cn7d887651mm1hrv6acnh-clan-runtime.drv
  /nix/store/z47hrhglqwqmm8j7j8fr31691k0630px-clan-cli-source.drv
  /nix/store/zr34yppcz6fpg6gbly0l6vx6mahw9pxb-clan-cli.drv
  /nix/store/jk0r72pfjbijq55awpybr1sfwnbb8yin-nix-shell.drv