this derivation will be built:
  /nix/store/a2pbr987dvlvgvnr3ivp0gq4xb6bvj6z-bcachefs-module-7.0.0-30-generic.drv
building '/nix/store/a2pbr987dvlvgvnr3ivp0gq4xb6bvj6z-bcachefs-module-7.0.0-30-generic.drv'...