ppg2.FileInvariant #

ppg2.FileInvariant(filename: str | Path)

An invariant that triggers if a file was changed.

A file will only be rehashed, if it’s modification time or size have changed.

Changing just the file time will not lead to an invalidation of downstream jobs.

Instead of creating a FileInvariant(filename), you can also use job.depends_on_file(filename). See depends_on_file for details.