these 3 derivations will be built:
  /nix/store/yn3vi27qszgh2k4a3jxgzgkzswjd1v7j-grok-1.0.77-macos-aarch64.drv
  /nix/store/vvnfji6yy9sfib4vgyagknlp3a7m9zdy-grok-1.0.77.drv
  /nix/store/8vwgbff80rcayn1d5lalxqfz80c4920x-check-grok.drv
building '/nix/store/8vwgbff80rcayn1d5lalxqfz80c4920x-check-grok.drv' on 'grpc://farm.numtide.com:50051?connect-timeout=22&system=aarch64-darwin&token-file=/run/nix-farm-client/farm-token'
building '/nix/store/8vwgbff80rcayn1d5lalxqfz80c4920x-check-grok.drv' on farm.numtide.com:50051
check-grok> mac02: building 8vwgbff80rcayn1d5lalxqfz80c4920x-check-grok.drv