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fx delta

compare all built Fuchsia packages with a prior package snapshot

usage: fx delta [[--name|-n NAME] | [--source|-s PATH]] [--build] [--help-delta] [DELTA_ARGS...]

Compare metadata of all Fuchsia packages with a prior package snapshot.
  --name|-n NAME   Set the NAME of the source package snapshot (Default: "system")
  --source|-s PATH Read the source snapshot from the specified PATH (Default: $FUCHSIA_BUILD_DIR/snapshots/$NAME.snapshot)
  --help-delta     Show command line help for "pm delta"
  --build          Build the current package snapshot before comparing it to the previously saved snapshot
  DELTA_ARGS       Unknown arguments are passed through to "pm delta"

delta source code