Talk: Python

Conda

conda-env does not exist after entering the conda-shell without first calling conda-install, so I think the wiki is missleading here, or the package has a bug. conda-shell, conda-install have no effect and nothing happens. Bash just says it can't find that command.

shellHook explanation

It's not clear what the meaning of all the `shellHook` stuff is for, esp. the unset SOURCE_DATE_EPOCH bit.

How to use specific Python version?

I'm working on a project where we're using a specific patch version of Python. How would I set this up? This uses a Python fork, but I'm looking for a specific version of the official Python package.

L0b0 (talk) 22:01, 19 September 2021 (UTC)

Flake example for use with nix develop

I was trying to get python with packages as defined by a flake, and found https://dev.to/deciduously/workspace-management-with-nix-flakes-jupyter-notebook-example-2kke a useful discussion. I propose to add an example:

{
  description = "Python environment";
  inputs.nixpkgs.url = "nixpkgs/nixos-22.11";
  outputs = {nixpkgs, ...}: let
    system = "x86_64-linux";
    pkgs = import nixpkgs {inherit system;};
  in {
    devShells.${system}.default = pkgs.mkShell {
      buildInputs = [
        (pkgs.python3.withPackages (p: [
          p.requests
        ]))
      ];
      shellHook = "python";
    };
  };
}