{ pkgs ? import <nixpkgs> {} }:

let
    migen = pkgs.python3Packages.buildPythonPackage rec {
        name = "migen";

        src = pkgs.fetchFromGitHub {
            owner = "m-labs";
            repo = "migen";
            rev = "ccaee68e14d3636e1d8fb2e0864dd89b1b1f7384";
            sha256 = "sha256-oYdeY0MbTReKbAwmSznnqw0wNawdInJoFJVWW3tesFA=";
            fetchSubmodules = true;
        };

        propagatedBuildInputs = with pkgs.python3Packages; [ colorama ];
    };

    vivadoDeps = pkgs: with pkgs; [
        libxcrypt
        ncurses5
        zlib
        libuuid
        xorg.libSM
        xorg.libICE
        xorg.libXrender
        xorg.libX11
        xorg.libXext
        xorg.libXtst
        xorg.libXi
        freetype
        fontconfig
    ];

    vivadoEnv = pkgs.buildFHSUserEnv {
        name = "vivado-env";
        targetPkgs = vivadoDeps;
    };

    vivado = pkgs.buildFHSUserEnv {
        name = "vivado";
        targetPkgs = vivadoDeps;
        profile = "set -e; source /opt/Xilinx/Vivado/2022.2/settings64.sh";
        runScript = "vivado";
    };

in pkgs.mkShell {
    name = "UART-Testing";
    buildInputs = [
        migen
        pkgs.python3Packages.pyserial
        vivado
        vivadoEnv
        pkgs.python3Packages.numpy
    ];
}