these 2 derivations will be built:
  /nix/store/w10j6zr2gql09r5qn4fmy74blpsy0rmc-options.json.drv
  /nix/store/y657g641y2migsw8l66n4j0w11rplalf-options.md.drv
building '/nix/store/w10j6zr2gql09r5qn4fmy74blpsy0rmc-options.json.drv' on 'grpc://farm.numtide.com:50051?connect-timeout=20&system=aarch64-darwin&token-file=/run/nix-farm-client/farm-token'
building '/nix/store/w10j6zr2gql09r5qn4fmy74blpsy0rmc-options.json.drv' on farm.numtide.com:50051
options.json> mac02: building w10j6zr2gql09r5qn4fmy74blpsy0rmc-options.json.drv
building '/nix/store/y657g641y2migsw8l66n4j0w11rplalf-options.md.drv' on 'grpc://farm.numtide.com:50051?connect-timeout=20&system=aarch64-darwin&token-file=/run/nix-farm-client/farm-token'
building '/nix/store/y657g641y2migsw8l66n4j0w11rplalf-options.md.drv' on farm.numtide.com:50051
options.md> mac02: building y657g641y2migsw8l66n4j0w11rplalf-options.md.drv
options.md> structuredAttrs is enabled