these 4 derivations will be built:
  /nix/store/gag27yzjspxb2hvyy0h0v4rbpm5q593x-clan-runtime.drv
  /nix/store/awlni8n7c7qi506cxfybamnzqbcfnsjr-clan-cli-source.drv
  /nix/store/z9pa354zpxpkf30yllblz25axdr2v7h8-clan-cli.drv
  /nix/store/dpqzlmm18zj7bj90zg0f44nkdfs9cqb7-nix-shell.drv