these 3 derivations will be built:
  /nix/store/ijrmxb3awijd6zgvkbil0bdvynyq9ah1-clan-cli-source.drv
  /nix/store/fj1q643zb5vm3dadjcyx47mkjx3x33ag-clan-cli.drv
  /nix/store/2drrfjykifsp2lf03pl6b1lz6rng4czy-nix-shell.drv