this derivation will be built:
  /nix/store/slbd0l28midcr5nm26aw16blwjdh0bn4-bcachefs-module-7.0.0-39-generic.drv
building '/nix/store/slbd0l28midcr5nm26aw16blwjdh0bn4-bcachefs-module-7.0.0-39-generic.drv'...