Grab the One-Click Install Packages
here
Grab the nightly build v2021.10.1-65-g5709b4c2_2021-11-11
here
Unpack them in a temp folder and enable "show hidden folder". You should end up with something like this:
-Drag KoboRoot.tgz into Kobo Libra 2 .kobo folder
-Copy .adds folder into Kobo Libra 2 root folder
Now you need to replace the original koreader with the Nightly version. It's in the .adds in folder you have just copied in the Kobo Libra 2, just delete the koreader folder and copy the Nightly one.
The last thing to do is to modify the Kobo eReader.conf with a simple text editor
find this line [FeatureSettings] and add bellow this line:
Code:
ExcludeSyncFolders=(\\.(?!kobo|adobe).+|([^.][^/]*/)+\\..+)
this is needed to prevent Nickel from scanning *nix hidden folders.
Hopefully after ejecting the Kobo Libra 2 will reboot and it should have the NickelMenu with the KOReader.