this derivation will be built:
  /nix/store/xg7qnkxj0m34pm87xs4mbkw4m4646dga-bcachefs-module-7.0.0-31-generic.drv
building '/nix/store/xg7qnkxj0m34pm87xs4mbkw4m4646dga-bcachefs-module-7.0.0-31-generic.drv'...