these 4 derivations will be built:
  /nix/store/b7y2ih68qpgh7jy2i57zfw3v8k5990x8-clan-runtime.drv
  /nix/store/kaar12a1rjx91kfibxx81g52csca9xyi-clan-cli-source.drv
  /nix/store/im6xvf3dykm42h0kyzppqqnv31m6r6zw-clan-cli.drv
  /nix/store/mibpw2lfszw80nsxn8n7zwqs9kikfyw4-nix-shell.drv