these 3 derivations will be built:
  /nix/store/b82gcr3ybx5969cha4w7lf2fc5w2gax2-clan-cli-source.drv
  /nix/store/2bf72hsw78ad4ydviaf1i3dxj7p67iy2-clan-cli.drv
  /nix/store/z3213n0awncnrcznp2nl79dlhzk210rb-nix-shell.drv