these 3 derivations will be built:
  /nix/store/7lx55pi6d769gfdc944zs1ff92mgm6y6-clan-cli-source.drv
  /nix/store/dizifjpf6ryj3qicifkks1ry1mlf1b3n-clan-cli.drv
  /nix/store/y1pjr5l3p14id94kfgppr1hi6fz2z202-nix-shell.drv