these 3 derivations will be built:
  /nix/store/qfx04p5y2l5qlc2qa0g9xlsvfmjb33xz-freebuff-darwin-arm64.tar.gz.drv
  /nix/store/laxxx5ldma0f3k6wkrmdaa98ghwnrqd4-freebuff-0.0.199.drv
  /nix/store/fpsa2n3xrikrbsyi2dp04kxk7qiv4xzc-check-freebuff.drv