these 6 derivations will be built:
  /nix/store/wgmf619npyy4l1csqw7qr9ibnpfm49qw-source.drv
  /nix/store/q6wb2krsqfjcrnmmdql3zlw54dwb1rnx-cpa-usage-keeper-frontend-2.0.0-npm-deps.drv
  /nix/store/4hkhkbdqx8ws8pll5mqvz8zxsq4g4n7r-cpa-usage-keeper-frontend-2.0.0.drv
  /nix/store/yyj8zqzfksrf95k9q55iwqp3ac3qid4w-cpa-usage-keeper-2.0.0-go-modules.drv
  /nix/store/4r6pcvq2bp9mac8x1ks7zq3yaa7xh4i5-cpa-usage-keeper-2.0.0.drv
  /nix/store/flawq8ykjyb4q94bmcisa1nff5x55ib2-check-cpa-usage-keeper.drv