Please take a look to https://archive.org/details/spinoza_etica_paravia_djvu, this is precisely a djvu-only item that I uploaded some days ago. I asked for permission to create "djvu-only items" into IA forum and I got it; this is the fiirst item I created; as you see there's some "implicit convention" too (the name of item is the original one + a _djvu suffix: it has been derived from https://archive.org/details/spinoza_etica_paravia) and metadata are the same, but a standard warning "Derived from files into L'Etica" into the description field.

So far I did not do the last step, t.i. adding a "backlink" from original item to the derived one. 

internetarchive.py allows to automatize the whole work (to download metadata of source item, to build the new item name and to add the warning do description field and to upload the new item). 

Alex

2017-01-02 14:37 GMT+01:00 Sam Wilson <sam@samwilson.id.au>:

On Mon, 2 Jan 2017, at 05:29 PM, Andrea Zanni wrote:

Ideally, we should talk to IA about this.

Adding a comment on the IA item is a very low-cost solution and I think is important, adding the djvu would be much better. We should check if a script can edit every kind of item and add files (I think not).

Aubrey

Yes, good idea about talking to them.

I wonder about the workflow too, because what about the situation of someone uploading a new work with our tool: the script creates a new IA item then (I assume as the 'wikisource-import-tool' or whatever user) and then it will have full permissions over that item. So the update-DjVu scenario will only apply for IA items that already exist but which don't have DjVu files (i.e. only the last few months' worth). Which is good...

—sam

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