Hi all,
I would appreciate it if some of you could beta test the next calibre release.
There is an on-going effort to port calibre to Python 3 and as preparation for that, there have been lots of wide-ranging changes to calibre internals. I have tested things and been running the ported code myself for a while now, but given how large calibre is, there is no way for me to cover everything. So beta testing by a larger group would be appreciated.
Please backup your calibre configuration folder and libraries before installing the beta.
Note that in particular the configuration file format for some calibre preferences has changed, old settings should be automatically migrated. Note
that if you downgrade from the beta to an older version the migrated settings will be ignored. However, if you then make new changes to the settings, they will not be migrated again.
Please report any issues you find either here or in the calibre bug tracker.
The betas are available from:
https://download.calibre-ebook.com/betas/