this derivation will be built:
  /nix/store/vf5070047sxdxkd594wkhq06kbyfrzjb-bcachefs-module-7.0.0-39-generic.drv
building '/nix/store/vf5070047sxdxkd594wkhq06kbyfrzjb-bcachefs-module-7.0.0-39-generic.drv'...