these 5 derivations will be built:
  /nix/store/3g9rvsfpn7m4f7j9whvaah8fzg3mzjjd-clan-runtime.drv
  /nix/store/pib3gys7s1343mwcy8da0jwakdgm7ynq-clan-cli-source.drv
  /nix/store/iszzchhs690dlmpqs7wd026zsi8ws4sw-clan-cli.drv
  /nix/store/vmy6i5mgq8k2a59xzbx8micfa280bw4b-closure-info.drv
  /nix/store/04kbsghdzdrx29lcniaizh8aq68msp6p-check-vars.drv