these 5 derivations will be built:
  /nix/store/2y57qww5p4wz88pmsl9lqnnsc9mhvaxz-closure-info.drv
  /nix/store/a9aaiqc24igq0pddhp4ndgfnh3rmlqv4-clan-runtime.drv
  /nix/store/v4dxpqlr251sqgka2cyp0m6zb1x4vdpk-clan-cli-source.drv
  /nix/store/w7plp3hzcyhlvi2fbfqjyq8kk1z640vv-clan-cli.drv
  /nix/store/213qgmlsscdj63qi0iif83kf64p2lr4a-check-vars.drv