these 3 derivations will be built:
  /nix/store/3my1qzn3r6728c9zn0rfr2jskndh104x-clan-cli-source.drv
  /nix/store/610c8i9qqxzfk410952rx5sbbbxx4mw8-clan-cli.drv
  /nix/store/lz9b0228jzdf1ni0g84bw38yx1pqk8wy-nix-shell.drv