Re: Setting up a python environment

[Roy Lemmon <roy@roylemmon.com>]

Thanks. I will try that.

Cheers
Roy.

On Mon, 11 May 2020, 15:31 Julien Lepiller, <julien@lepiller.eu> wrote:

> Le 11 mai 2020 10:09:40 GMT-04:00, Roy Lemmon <roy@roylemmon.com> a écrit
> :
> >Thanks sirgazil. That is very helpful.
> >
> >Yes, it might be that astropy has many dependencies.
> >
> >I will take a look at that video and also get a better handle on
> >packaging.
> >
> >Cheers
> >Roy.
> >
> >
> >On Mon, 11 May 2020, 14:56 sirgazil, <sirgazil@zoho.com> wrote:
> >
> >>  ---- On Mon, 11 May 2020 07:34:09 -0500 Roy Lemmon
> ><roy@roylemmon.com>
> >> wrote ----
> >>  > Hi,
> >>  >
> >>  > I would like to ask about the general philosophy of setting up a
> >python
> >>  > environment under guix.
> >>  >
> >>  > For other linux systems I have used pip to manage python packages
> >and
> >>  > libraries.
> >>  >
> >>  > In guix is the idea that guix replaces pip for managing packages
> >and
> >>  > libraries ?
> >>
> >> I think so, yes, ideally.
> >>
> >>  > So I would create a python-package for any missing python
> >>  > packages ?
> >>
> >> Yes.
> >>
> >>  > In the guix package lists, I can find many of the python
> >>  > libraries but there are a few missing that I would like, eg.
> >astropy -
> >> an
> >>  > astronomy analysis library. So should I be creating a guix package
> >for
> >> that
> >>  > rather than installing with pip ?
> >>
> >> That's the idea, yes: to have all Python packages available in Guix.
> >That
> >> way, if your projects depend on Python packages and non-Python
> >packages,
> >> you can specify all the requirements of your projects conveniently in
> >a
> >> Guix manifest file (instead of having a requirements file for pip and
> >> another requirements file for some OS package manager, and possibly,
> >> another requirements file for another programmnig language used in a
> >> project).
> >>
> >> In practice, though, your projects could require many packages that
> >are
> >> not yet in Guix. For example, astropy could depend on other packages
> >that
> >> are not available, and those packages depend on other packages that
> >are not
> >> available, and so on. To package them all would be a job in itself,
> >and you
> >> would not have time to work on your project.  So, depending on your
> >> specific case, you might still need to use Python virtual
> >environments and
> >> pip to get things done. For the latter you can use Python's venv, or
> >> poetry, or other tools that are already available in Guix for
> >managing
> >> Python projects and environments.
> >>
> >> I recommend to watch the https://guix.gnu.org/videos/ for an
> >introduction
> >> to packaging.
> >>
> >>
> >>
> >>
> >> ---
> >> https://sirgazil.bitbucket.io/
> >>
> >>
> >>
> >>
>
> Guix also has a cool import feature that might help you package missing
> paekages. You thould try 'guix import pypi -r astropy'.
>