these 6 derivations will be built:
  /nix/store/00i0wd54qyqdiq50bfcindna10hj5pqq-source.drv
  /nix/store/839qkjp3sf9s3bp3gxvgb7l4gsm3xpqd-cpa-usage-keeper-frontend-2.1.0-npm-deps.drv
  /nix/store/qrl8z74m9rsn1qfsnp1pwyzqqwcpmy2z-cpa-usage-keeper-frontend-2.1.0.drv
  /nix/store/j6qpjrnsxkqyfsra6ii7s8c9jhkhcvfd-cpa-usage-keeper-2.1.0-go-modules.drv
  /nix/store/gv6iqchqg8zcwdgjp1fp6s51d5zs12cq-cpa-usage-keeper-2.1.0.drv
  /nix/store/ssfqp7qzvpjnc6c4axbkv4qqnrlb7zg1-check-cpa-usage-keeper.drv