Hi Sébastien,

thanks for your contribution!

> This patchset packages the pantalaimon E2EE proxy for Matrix clients.
> It's the first time I'm sending a full-fledged patchset, and all
> comments are super welcome!
I was going to package python-matrix-nio anyway, so I picked up this
patchset and made some modifications:

- Removed python2-atomicwrites-1.4 (we’re trying to get rid of Python 2).
- Moved some matrix-related packages to gnu/packages/matrix.scm, which seems more appropriate. YMMV.
- Renamed python-pantalaimon to pantalaimon, because it’s an application, not a library.
- Upgraded python-olm to inherit from libolm.
- Updated the hash for python-pycryptodomex, because it inherits from python-pycryptodome and fails to build otherwise.

See attachments for a v2. Does this look good to you?

Cheers,
Lars

PS: Could you please add new packages at the bottom of a file? I feel
adding them at the top makes rebasing very difficult.