From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tanguy Le Carrour Subject: Re: How can I replace Python venv and pip with Guix? Date: Tue, 4 Feb 2020 08:59:25 +0100 Message-ID: <20200204075925.mcfwd7gyzeko5lwz@rafflesia> References: <170082257a9.bbf196a73697.871070894081541659@zoho.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit Return-path: Received: from eggs.gnu.org ([2001:470:142:3::10]:36211) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iyt7K-0001Jb-3w for help-guix@gnu.org; Tue, 04 Feb 2020 02:59:31 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iyt7I-0000vN-TM for help-guix@gnu.org; Tue, 04 Feb 2020 02:59:30 -0500 Received: from relay4-d.mail.gandi.net ([217.70.183.196]:47385) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1iyt7I-0000dX-M3 for help-guix@gnu.org; Tue, 04 Feb 2020 02:59:28 -0500 Content-Disposition: inline In-Reply-To: <170082257a9.bbf196a73697.871070894081541659@zoho.com> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: help-guix-bounces+gcggh-help-guix=m.gmane-mx.org@gnu.org Sender: "Help-Guix" To: sirgazil Cc: Guix Help Hi, Le 02/02, sirgazil a écrit : > I'm currently using two package managers when working on my projects > written in Python. I use Guix to install Python, Depending on your OS, you can also use Pyenv [1][] to install what ever version of Python you like. I haven't figured out how to package it for Guix, though. [1]: https://github.com/pyenv/pyenv > […] and Python pip to install As Zelphir mentioned, you should definitively use Poetry to manage your Python dependencies! Poetry 0.12.17 is available in Guix and version 1.0.3 is on it's way! Poetry manages the dependencies and the packaging. It will create the `setup.py` with the appropriate `install_requires`. > […] > Emacs Elpy detects the virtual environments I create in this way, so I can > activate and deactivate them from Emacs with an easy to use interface and > have code completion that depends on the packages available in the active > environment. > > I'd like to use Guix and its environments to replace this functionality and > to make my development environments easier to reproduce, but I don't > understand how to that exactly. > > So far I have tried the "guix environment" command as follows, trying to > create a persistent environment I can activate/deactivate whenever I want: > > #+BEGIN_EXAMPLE > $ guix environment --pure --manifest=guix.scm --root=/path/to/my-guix-envs/my-project > #+END_EXAMPLE If you want to create a persistent environment, you should use a profile, not the `environment` command. There's a good cookbook entry for that [2][]. [2]: https://guix.gnu.org/cookbook/en/html_node/Guix-Profiles-in-Practice.html#Guix-Profiles-in-Practice > After running that command, I can see the prompt adds a "[env]" label > indicating that I'm in the environment, and I can use the packages specified > in the manifest file. But > > • How could one make the prompt add "[my-project]" instead of the generic > "[env]"? I would say this depends on the shell you are using. If you are a Bash user, you have to set the PS1 variable. If you use Fish [3][], you have to set your prompt in a config file: `~/.config/fish/functions/fish_prompt.fish` and/or `~/.config/fish/functions/fish_right_prompt.fish`. [3]: https://fishshell.com/docs/current/tutorial.html#tut_prompt > • Once I deactivate this environment (Ctrl+D), how can I activate it again? I personally use Direnv [4][] to manage this. Whenever I `cd` to a project folder, it creates and/or activates the venv and deactivates it when you `cd` out of it. [4]: https://github.com/direnv/direnv/wiki/Python Using poetry + pyenv + direnv might be a bit confusing at first, but it's really worth a try! Regards -- Tanguy