this post was submitted on 19 Oct 2024
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43
How to install up-to-date python for a user only? (slrpnk.net)
submitted 2 months ago by [email protected] to c/[email protected]
52 comments fedilink hide all child comments
 

You know, immutable enterprise systems.

I installed HeliumOS (Almalinux bootc) on a corebooted Chromebook. Works really well, but audio needs to be configured.

The script needs a recent python which is not available there.

Go and rust can be installed for a user only. Is there something similar for python?

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[–] [email protected] 6 points 2 months ago* (last edited 2 months ago) (2 children)

If you can install nix (you can install it per user) then you can have whatever you want in a temporary shell with nix-shell -p python

nix profile install nixpkgs#python if you want it actually installed

Home manager is also entirely user level I believe and lets you use a declarative config too

[–] [email protected] 1 points 2 months ago (3 children)

I tried to get install instructions for home-manager and they only had them if you are already on nix?

I didnt get it

[–] [email protected] 3 points 2 months ago (1 children)

I'd try installing just regular nix (package manager, not operating system) rather than home manager, that's what I do on by Debian pi

There's an install script on their website that does it all for you

[–] [email protected] 1 points 2 months ago

Nice! Yes I will do that. What is the difference between the 2?

[–] [email protected] 2 points 2 months ago (1 children)

Careful, there's three different terms in the mix here:

NixOS: an entire operating system, you don't need this.

nix: the nix package manager. This is what you'll need to install. look for single user install in the instructions.

home-manager: a module for nix. It's aim is to allow declarative configuration of a users' home configuration (and allow easier per-user install of packages on a global nix install).

If you want to go down the nix route, which I would recommend if you enjoy tinkering and having fine control over your system, you should start with installing nix. With that, you can already setup a shell that has the newest version of python available.

Going beyond that, I can link you some more resources, if you want c:

[–] [email protected] 1 points 2 months ago

So "nix install" means placing a nix binary somewhere in my user $PATH?

[–] [email protected] 1 points 2 months ago* (last edited 2 months ago) (2 children)

Home-manager > nix profile

Also, nix-shell is supposed to be used for debugging, and nix shell/develop for using packages without installing them

[–] [email protected] 1 points 2 months ago (1 children)

Source on the second statement? My understanding was that nix-shell is legacy for systems without flakes and nix-command enabled, and are being replaced by nix shell/run/develop

[–] [email protected] 1 points 2 months ago (1 children)
[–] [email protected] 1 points 2 months ago (1 children)

Interesting, didn't know the history of the command. But that post confirms my understanding, that nix shell/develop are the new replacements for nix-shell, with nix shell for temporary package installs and nix develop for debugging and developing

[–] [email protected] 1 points 2 months ago (1 children)

As far as I understand, they're not replacements in the same way nix profile replaces nix-env. They seem to serve a different purpose, but I don't know enough to say for certain.

[–] [email protected] 1 points 2 months ago

of course they're not a drop-in replacement, as the cli is getting a major redesign, but as per your source

nix shell and nix develop are still experimental, so nix-shell is sticking around despite doing the same thing

it seems like they are made to fulfill the same purpose

[–] [email protected] 1 points 2 months ago* (last edited 2 months ago) (1 children)

Does home manager work standalone without having nix first? I've never installed it on non-nixos

Nix shell is absolutely for running packages without installing them it literally tells you to do that in the terminal hint

Nix run iirc only works with flakes

[–] [email protected] 1 points 2 months ago* (last edited 2 months ago) (1 children)

No, it builds on top of nix. But it seems like the only real option for declarative package management.

Nix shell and nix-shell are different commands

https://discourse.nixos.org/t/nix-shell-nix-shell-and-nix-develop/25964/4

Nix run iirc only works with flakes

So does nix shell

[–] [email protected] 1 points 2 months ago (1 children)

nix shell -p works without flakes enabled

[–] [email protected] 1 points 2 months ago (1 children) 
$ nix shell -p python
error: unrecognised flag '-p'
Try 'nix --help' for more information.
[–] [email protected] 1 points 2 months ago* (last edited 2 months ago)

Sorry I meant nix-shell -p, I didn't read your original comment properly apparently

It's definitely an option as op wants to run one script from the sounds of it, nix-shell not nix shell is perfect for that

It's a bit needlessly confusing that there are two entirely separate commands with the same name and thought you were talking about the original one