this derivation will be built:
  /nix/store/dq4rc5l49vq3d54zi127kq0pcv4jwy8g-bcachefs-module-7.0.0-39-generic.drv
building '/nix/store/dq4rc5l49vq3d54zi127kq0pcv4jwy8g-bcachefs-module-7.0.0-39-generic.drv'...