these 4 derivations will be built:
  /nix/store/3ch7bc22806b35dy0id8dfc8khpgh9v0-source.drv
  /nix/store/gy6zir1nfaldvxjndak6q65bnz8fb7jg-workmux-0.1.250-vendor-staging.drv
  /nix/store/php9gvrx3ppa7nw25k70zh4nf3k5qa0l-workmux-0.1.250-vendor.drv
  /nix/store/ah2dzphy167n80p9cdky97yymy0izkyn-workmux-0.1.250.drv