these 3 derivations will be built:
  /nix/store/xcir7b60l59k2xk0a12vbn849bklk1vy-clan-cli-source.drv
  /nix/store/adiaahdnvm83blbza5lbs27qkpxqrkg8-clan-cli.drv
  /nix/store/bjz0i5c49mbmbysy8vm3l3j1js01lshc-nix-shell.drv