Jigdo-lite should handle incomplete transfers instead of clearing temp cache

[Caroline Ford]

Binary package hint: jigdo-file

Jigdo-lite will try for 20 times to download a file before giving up. If it times out 20 times next time it will start from scratch rather than with the % it had already downloaded. When you have a poor connection and are trying to download 4M files this is very annoying as you can always get so far but no further :(

apt-get doesn't do this and allows multiple attempts, always continuing where it left off.

Jigdo-lite saves the files it is downloading to a temporary file cache which it clears into the image it is building every so often. It appears that it clears the cache (and doesn't add to the image) if it contains partial files so that the downloaded data is lost.