this derivation will be built:
  /nix/store/r4ai78vxk583mi4l7wgwfvf9p9s4nz28-bcachefs-module-7.0.0-39-generic.drv
building '/nix/store/r4ai78vxk583mi4l7wgwfvf9p9s4nz28-bcachefs-module-7.0.0-39-generic.drv'...