these 2 derivations will be built:
  /nix/store/dd8jf0s00zy739l7q9yj7akm74y2mf79-options.json.drv
  /nix/store/iziphsqm1wz0cxxsmp497qxczvcpvxv2-options.md.drv
building '/nix/store/dd8jf0s00zy739l7q9yj7akm74y2mf79-options.json.drv' on 'grpc://farm.numtide.com:50051?connect-timeout=21&system=aarch64-linux&token-file=/run/nix-farm-client/farm-token'
building '/nix/store/dd8jf0s00zy739l7q9yj7akm74y2mf79-options.json.drv' on farm.numtide.com:50051
options.json> elastic-arm-0a686c29: building dd8jf0s00zy739l7q9yj7akm74y2mf79-options.json.drv
building '/nix/store/iziphsqm1wz0cxxsmp497qxczvcpvxv2-options.md.drv' on 'grpc://farm.numtide.com:50051?connect-timeout=21&system=aarch64-linux&token-file=/run/nix-farm-client/farm-token'
building '/nix/store/iziphsqm1wz0cxxsmp497qxczvcpvxv2-options.md.drv' on farm.numtide.com:50051
options.md> elastic-arm-bdb1245a: building iziphsqm1wz0cxxsmp497qxczvcpvxv2-options.md.drv
options.md> structuredAttrs is enabled