this derivation will be built:
  /nix/store/h80s8hwv1jxgw4s15bf9gi5c7s95784v-bcachefs-module-7.0.0-38-generic-64k.drv
building '/nix/store/h80s8hwv1jxgw4s15bf9gi5c7s95784v-bcachefs-module-7.0.0-38-generic-64k.drv'...