Since mods can't directly access the savefile, this mod takes it upon itself to track wich items are picked up. This means that the first time you install this mod, everything will be marked as unseen.
Turns out EID already has some support for this, using a save extractor. If you want to go down that route, here's the link to the extractor : https://github.com/wofsauge/External-Item-Descriptions/tree/master/scripts
However, EID's save extractor doesn't really work on Linux, so I made a port of it in python, in order to be more easily ran. This port is available here : https://forge.chapril.org/ayte/DeadGodHelper/src/branch/main/SaveExtractor