this derivation will be built:
  /nix/store/ax8dn04afa828mn2mhmqy6xjjrwdwzfp-bcachefs-module-7.0.0-38-generic.drv
building '/nix/store/ax8dn04afa828mn2mhmqy6xjjrwdwzfp-bcachefs-module-7.0.0-38-generic.drv'...