these 3 derivations will be built:
  /nix/store/wjcza24k4z3gnjvkgczg5qbicf30p9pl-clan-cli-source.drv
  /nix/store/kl56xjr2qdh0sik16hx2yn9sgavxxzqy-clan-cli.drv
  /nix/store/h4pmircwaiqll0pryh389s2hlm6sdb33-nix-shell.drv