this derivation will be built:
  /nix/store/npy7ympxfpzvgcnv62scx30s79p1n3z2-bcachefs-module-7.0.0-27-generic.drv
building '/nix/store/npy7ympxfpzvgcnv62scx30s79p1n3z2-bcachefs-module-7.0.0-27-generic.drv'...