this derivation will be built:
  /nix/store/81rcwcg555vsvja5h4q1wawwb7964iqx-bcachefs-module-7.1.5+deb14-rt-amd64.drv
building '/nix/store/81rcwcg555vsvja5h4q1wawwb7964iqx-bcachefs-module-7.1.5+deb14-rt-amd64.drv'...