this derivation will be built:
  /nix/store/4h9fzfxd847my088ys2gg0pdgnbl1lzj-bcachefs-module-7.0.0-39-generic.drv
building '/nix/store/4h9fzfxd847my088ys2gg0pdgnbl1lzj-bcachefs-module-7.0.0-39-generic.drv'...