[bug#42885] [PATCH 23/27] gnu: calibre: Update to 5.13.0.

[Leo Famulari]

On Wed, Mar 10, 2021 at 08:00:49PM +1100, Brendan Tildesley wrote:
> * gnu/packages/ebook.scm (calibre): Update to 5.13.0.
> 
> Switch all Python 2 inputs to their Python 3 equivalents.

Alright, the patches are aleady stale, even at patch 2 of 27.

To make this easier, can you either put this work online in a Git repo
somewhere? It's easier to clone a repo with a custom branch to rebase
the patches.

Alternatively, can you say which older Guix Git commit these patches
apply to?

Thansk!