this derivation will be built:
  /nix/store/87z40ghj71m7zmzar96h873pdx3cvicg-bcachefs-module-7.0.0-39-generic.drv
building '/nix/store/87z40ghj71m7zmzar96h873pdx3cvicg-bcachefs-module-7.0.0-39-generic.drv'...