[DaSHacka]

Reminds me when he said he'd maintain the entire python 2 language instead of upgrading Calibre to use python 3

https://bugs.launchpad.net/calibre/+bug/1714107

There are a lot of other gems too if you look through Calibre's bug tracker

https://bugs.launchpad.net/calibre/+bug/885027

https://bugs.launchpad.net/calibre/+bug/1894442

https://bugs.launchpad.net/calibre/+bug/853934