this derivation will be built:
  /nix/store/20hwg8fvibnf8x3d7iy7mjwb4x51npcf-bcachefs-module-7.0.0-28-generic.drv
building '/nix/store/20hwg8fvibnf8x3d7iy7mjwb4x51npcf-bcachefs-module-7.0.0-28-generic.drv'...