this derivation will be built:
  /nix/store/l2hx2w3iniqlwf1rk3mdwzvl174n593f-bcachefs-module-7.0.0-30-generic.drv
building '/nix/store/l2hx2w3iniqlwf1rk3mdwzvl174n593f-bcachefs-module-7.0.0-30-generic.drv'...