https://wiki.nixos.org/wiki/Python#Running_Python_packages_which_requires_compilation_and/or_contains_libraries_precompiled_without_nix

{ lib, pkgs, ... }:
{
  home.packages = [
    (pkgs.buildFHSEnv {
      name = "pixi";
      runScript = "pixi";
      targetPkgs = pkgs: with pkgs; [ pixi ];
    })
  ];
}

给pixi fhs，用pixi管理py env，应该是最简洁之一？
另外，为了让vscode可以在不是pixi的环境下运行jupyter等，需要再加一个

programs = {
  nix-ld = {
    enable = true;
    libraries = [
      # pkgs.libGL, any other libraries your code may need...
      # See nix-alien and nix-autobahn for help finding which 
      # libraries you need to install... not sure the best way
      # to use these to find required libraries for Python packages
    ];
  };
};