these 3 derivations will be built:
  /nix/store/aqa1bzv8d0kajfs3yiil1k6zmink0dql-clan-cli-source.drv
  /nix/store/jjz9l81h42wjqj3m5wfwbqvcnwah9bkw-clan-cli.drv
  /nix/store/4s9sf4jj68kz6ldgqx65ilid1xpvbsq5-nix-shell.drv