this derivation will be built:
  /nix/store/v6qcrlqn4yjss9snx0hwhi3i2q9bw733-bcachefs-module-7.0.0-39-generic.drv
building '/nix/store/v6qcrlqn4yjss9snx0hwhi3i2q9bw733-bcachefs-module-7.0.0-39-generic.drv'...