these 2 derivations will be built:
  /nix/store/vd2pqwg9mqd8s9wy26xxhjpckn28x6ya-options.json.drv
  /nix/store/qmi1dlah7i0bf4gb4c69phqn79ndvdac-options.md.drv
building '/nix/store/vd2pqwg9mqd8s9wy26xxhjpckn28x6ya-options.json.drv' on 'grpc://farm.numtide.com:50051?connect-timeout=22&system=aarch64-darwin&token-file=/run/nix-farm-client/farm-token'
building '/nix/store/vd2pqwg9mqd8s9wy26xxhjpckn28x6ya-options.json.drv' on farm.numtide.com:50051
options.json> mac02: building vd2pqwg9mqd8s9wy26xxhjpckn28x6ya-options.json.drv
building '/nix/store/qmi1dlah7i0bf4gb4c69phqn79ndvdac-options.md.drv' on 'grpc://farm.numtide.com:50051?connect-timeout=22&system=aarch64-darwin&token-file=/run/nix-farm-client/farm-token'
building '/nix/store/qmi1dlah7i0bf4gb4c69phqn79ndvdac-options.md.drv' on farm.numtide.com:50051
options.md> mac02: building qmi1dlah7i0bf4gb4c69phqn79ndvdac-options.md.drv
options.md> structuredAttrs is enabled