these 3 derivations will be built:
  /nix/store/z34s9cj04lrxslwfl8d0np48m1x6a6vy-clan-cli-source.drv
  /nix/store/jl2n7gfmahwlcsm8pa2icp6dymbc8v01-clan-cli.drv
  /nix/store/p7q6g1jbnsr7cpq1nr1k1x2mp2imr3qz-nix-shell.drv