these 3 derivations will be built:
  /nix/store/gkrjvfcw3hhnm7db69qkjg02hyh3p023-clan-cli-source.drv
  /nix/store/44g9irzs077qf11ipc6kban0b8qwkfhi-clan-cli.drv
  /nix/store/zdd64jgskmhgnqfxziy4xngx4ha7fq69-nix-shell.drv