allmyu
July 20, 2025, 4:51pm
1
I am trying to set up jetbrains pycharm via flakes. I found the-nix-way flake templates and followed the instructions to set it up with direnv.
But when I try to install numpy in jetbrains i get this error
Original error was: libstdc++.so.6: cannot open shared object file: No such file or directory
I think this means my .venv dose not have a copy of or a path to libstdc++.
how can i include this library into .venv?
right now I need to have python3 installed into my home.nix file to get jetbrains to see the interpreter.
can the interpreter be inside a flake? If it is how can I add it to the flake?
once its in the flake will jetbrains recognize it or will i need to add a custom run configuration?
any help will be appreciated please and thanks
drupol
July 20, 2025, 7:12pm
2
Hello,
I think the search button will help since this is a common issue.
The wiki might help too: Python - NixOS Wiki
1 Like
In my experience you will have a much better time to install all the packages through Nix or use something like uv2nix.
When I tried the imperative way with Python I constantly run into these kind of problems.
1 Like
This is my very basic flake which I use to do Python development, it should solve the error:
{
description = "A very basic flake";
inputs = {
nixpkgs.url = "github:nixos/nixpkgs/master";
};
outputs = { self, nixpkgs }: let
pkgs = nixpkgs.legacyPackages.x86_64-linux;
in {
devShells.x86_64-linux.default = pkgs.mkShell {
packages = with pkgs; [ pdm (python3.withPackages(p: with p; [ tkinter ])) linuxPackages_latest.perf virtualenv gcc14 gfortran14 zlib ];
LD_LIBRARY_PATH = "${pkgs.stdenv.cc.cc.lib}/lib/:${pkgs.zlib}/lib/";
};
};
}
Everything else I need I install with pdm inside the venv and it works fine.
Note that using LD_LIBRARY_PATH leads to a lot of runtime issues eventually, we’ve learned that the hard way with devenv python integration.
Definitely a hack but it’s the only reliable way that I could get my Python envs to work properly. I can imagine it causing issues for larger environments so it’s not a silver bullet.