this derivation will be built:
  /nix/store/hww7ag267q17qs0f861fpx7hvmswykq7-bcachefs-module-7.0.0-31-generic.drv
building '/nix/store/hww7ag267q17qs0f861fpx7hvmswykq7-bcachefs-module-7.0.0-31-generic.drv'...