From mboxrd@z Thu Jan  1 00:00:00 1970
From: Konrad Hinsen <konrad.hinsen@fastmail.net>
Subject: Re: Towards reproducibly Jupyter notebooks with Guix-Jupyter
Date: Mon, 14 Oct 2019 13:45:57 +0200
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To: Ludovic =?utf-8?Q?Court=C3=A8s?= <ludovic.courtes@inria.fr>
Cc: Guix Devel <guix-devel@gnu.org>

Hi Ludo,

> (Though printing addresses in a REPL isn=E2=80=99t =E2=80=9Cbad practice=
=E2=80=9D IMO, it=E2=80=99s just
> that it doesn=E2=80=99t mesh well with the intended use of notebooks.)

And that's exactly the difference between a REPL and a reproducible
document. Unfortunately, Jupyter tries to be both and thus never
explains the differences clearly.

> At the API level, there=E2=80=99s =E2=80=98inferior-for-channels=E2=80=99=
 which does that +
> registers a GC root + maintains a cache so that the second time you use
> a given instance of Guix it=E2=80=99s immediately available.

Just what I need...

> Now, I think you can safely use it in your code, I don=E2=80=99t foresee =
any
> significant change at this point.
>
> As to whether you=E2=80=99d want to talk about it in the MOOC for instanc=
e, you

Certainly not. I just want to be sure that the functionality won't go
away. If the API changes a bit, that can be fixed.

I'll start playing with this...

Cheers,
  Konrad.