shell-build123d.nix

# shell-build123d.nix

# Shell environment for build123d
# https://build123d.readthedocs.io/en/latest/index.html

# https://wiki.nixos.org/wiki/Python#Using_nix-shell_alongside_pip

{ pkgs ? import <nixpkgs> {} }:

let
  myPython = pkgs.python311;
  pythonPackages = pkgs.python311Packages;

  pythonWithPkgs = myPython.withPackages (pythonPkgs: with pythonPkgs; [
    # This list contains tools for Python development.
    # You can also add other tools, like black.
    #
    # Note that even if you add Python packages here like PyTorch or Tensorflow,
    # they will be reinstalled when running `pip -r requirements.txt` because
    # virtualenv is used below in the shellHook.
    ipython
    pip
    setuptools
    virtualenvwrapper
    wheel
    black
    # https://discourse.nixos.org/t/what-package-provides-libstdc-so-6/18707/3
    stdenv
  ]);

  extraBuildInputs = with pkgs; [
    # this list contains packages that you want to be available at runtime and might not be able to be installed properly via pip
    pythonPackages.pandas
    pythonPackages.stdenv
    pythonPackages.requests
    stdenv.cc.cc.lib
    gcc
    expat
    libGL
    xorg.libX11
    zlib
  ];

in
  import ./shell-python.nix {
    extraBuildInputs=extraBuildInputs;
    # extraLibPackages=extraLibPackages;
    myPython=myPython;
    pythonWithPkgs=pythonWithPkgs;
  }

shell-python.nix

# python-shell.nix

{ pkgs ? import <nixpkgs> {}, extraBuildInputs ? [], myPython ? pkgs.python3, extraLibPackages ? [], pythonWithPkgs? myPython }:

let
  buildInputs  = with pkgs; [
    clang
    llvmPackages_16.bintools
    rustup
    # stdenvNoCC
    # stdenvNoLibs
    # stdenv_32bit
    # gccStdenv
    # gccStdenvNoLibs
    # libcxxStdenv
    # gccMultiStdenv
    # gcc49Stdenv
  ] ++ extraBuildInputs;

  lib-path = with pkgs; lib.makeLibraryPath buildInputs;

  shell = pkgs.mkShell {
    buildInputs = [
     # my python and packages
      pythonWithPkgs

      # other packages needed for compiling python libs
      pkgs.readline
      pkgs.libffi
      pkgs.openssl

      pkgs.git
      pkgs.openssh
      pkgs.rsync
      pkgs.cowsay
      pkgs.lolcat
      pkgs.nix-index

      # unfortunately needed because of messing with LD_LIBRARY_PATH below
      pkgs.gcc
      pkgs.stdenv
      # pkgs.stdenv-linux
      pkgs.stdenvNoCC
      pkgs.stdenvNoLibs
      pkgs.stdenv_32bit
      pkgs.gccStdenv
      pkgs.gccStdenvNoLibs
      pkgs.libcxxStdenv
      pkgs.gccMultiStdenv
      pkgs.gcc49Stdenv
  ] ++ extraBuildInputs;

  GREETING = "Entering build123d development shell!";

  shellHook = ''
    # Allow the use of wheels.
    SOURCE_DATE_EPOCH=$(date +%s)

    # Augment the dynamic linker path
    export "LD_LIBRARY_PATH=$LD_LIBRARY_PATH:${lib-path}"

    # https://discourse.nixos.org/t/what-package-provides-libstdc-so-6/18707/4
    # fixes libstdc++ issues and libgl.so issues
    LD_LIBRARY_PATH=lib.makeLibraryPath [ pkgs.stdenv.cc.cc ];

    # Setup the virtual environment if it doesn't already exist.
    VENV=shell-build123d

    if test ! -d $VENV; then
      virtualenv $VENV
    fi

    source ./$VENV/bin/activate
    export PYTHONPATH=$PYTHONPATH:`pwd`/$VENV/${myPython.sitePackages}/
    pip install --upgrade pip
    pip install build123d
    echo $GREETING | cowsay | lolcat
    '';
  };

in
  shell

test-build123d.py

# test-build123d.py

# Installation test
# https://build123d.readthedocs.io/en/latest/installation.html#test-your-build123d-installation

from build123d import *
print(Solid.make_box(1,2,3).show_topology(limit_class="Face"))

test-shell.sh

# test-shell.sh

# https://discourse.nixos.org/t/how-to-create-a-development-environment-for-build123d/45146/2?u=technicus

nix-shell shell-build123d.nix --command "python ./test-build123d.py"

Please do!