nixos

I have a program that I wrote, maybe I didn't package it appropriately, but I cannot got it to run. I wrote it on a manjaro install, and tested it on another manjaro install, both were fine. I packaged it with poetry and copied the wheel over.

Today I tried to install it on my nixos surface tablet I use at work. I get this error on installation:

Traceback (most recent call last):                                            File "/home/gzuh/.local/bin/willcallgui", line 5, in <module>
    from willcallgui import willcallgui
  File "/home/gzuh/.local/share/pipx/venvs/willcallgui/lib/python3.11/site-packages/willcallgui/willcallgui.py", line 12, in <module>
    import tkinter as tk
  File "/nix/store/h723hb9m43lybmvfxkk6n7j4v664qy7b-python3-3.11.9/lib/python3.11/tkinter/__init__.py", line 38, in <module>
    import _tkinter # If this fails your Python may not be configured for Tk
    ^^^^^^^^^^^^^^^
ModuleNotFoundError: No module named '_tkinter'

These are the packages i have installed... I'm trying to install it with pipx...

environment.systemPackages = with pkgs; [
    vim
    wget
    screen
    google-chrome
    openssh
    blackbox-terminal
    tailscale
    gnome.gnome-tweaks
    imagemagick
    git
    python311Full
    python311Packages.tkinter
    python311Packages.pip
    python311Packages.pipx

  ];

What am i missing?