this derivation will be built:
  /nix/store/sw9sl73989p8ljrk7vbga3g4wic45jnz-bcachefs-module-7.0.0-39-generic.drv
building '/nix/store/sw9sl73989p8ljrk7vbga3g4wic45jnz-bcachefs-module-7.0.0-39-generic.drv'...