this derivation will be built:
  /nix/store/m8fn56n5y9mw1ddnvlwkwmi4dny42npp-bcachefs-module-7.0.0-39-generic.drv
building '/nix/store/m8fn56n5y9mw1ddnvlwkwmi4dny42npp-bcachefs-module-7.0.0-39-generic.drv'...