{ lib, config, pkgs, ... }: let
  py3 = pkgs.python3;
  py3Pkgs = py3.pkgs;
  equation = py3Pkgs.buildPythonPackage {
    pname = "Equation";
    version = "1.2.01";
    nativeBuildInputs = [
      py3Pkgs.setuptools
      py3Pkgs.numpy
    ];
    src = pkgs.fetchzip {
      url = "https://files.pythonhosted.org/packages/2e/cc/115fb1722051f99b9699864586e7f96ca0080645387698af922fade4f7b2/Equation-1.2.01.zip";
      sha256 = "YFxZB3vaC5s49K1AQLFF4WGUr2RpomJTLQdZ24ITXr4=";
    };
  };
  morphio = py3.pkgs.toPythonModule ( pkgs.stdenv.mkDerivation rec {
    pname = "MorphIO";
    version = "3.3.4";
    nativeBuildInputs = (with pkgs; [
      cmake
      ninja
      py3
      py3.pkgs.numpy
      hdf5
    ]);
    cmakeFlags = [
      "-DMorphIO_CXX_WARNINGS=OFF"
    ];
    postInstall = ''
      mkdir -p $out/${py3.sitePackages}
      mv ../morphio $out/${py3.sitePackages}
      cp binds/python/_morphio.* $out/${py3.sitePackages}/morphio/
    '';
    src = pkgs.fetchFromGitHub {
      owner = "BlueBrain";
      repo = "MorphIO";
      rev = "v${version}";
      deepClone = true;
      fetchSubmodules = true;
      sha256 = "C3zDziG7LF7v22ZvplBrtOYq7iKGnAavfpiBCcShHaQ=";
    };
  });
in {
  nixpkgs.overlays = [(self: super: rec {
    # Add CUDA Support to Blender
    blender_cuda = super.blender.override {
      cudaSupport = true;
    };
    # Add Opencamlib for BlenderCAM Support
    blender = blender_cuda.overrideAttrs (old: {
      pythonPath = old.pythonPath ++ (with py3Pkgs; [
        # OpenCAMLib support
        shapely
        equation
        opencamlib
        # NeuroMorphoVis support
        matplotlib
        seaborn
        pandas
        pillow
        h5py
        morphio
        # TODO add BluePy support?
      ]);
    });
    # Update RX and Aseprite
    rx = super.rx.overrideAttrs (old: {
      version = "git";
      src = super.fetchFromGitHub {
        owner = "cloudhead";
        repo = old.pname;
        rev = "18625a68921873ebe21a7ea8096409a9f0314541";
        sha256 = "sha256-LTpaV/fgYUgA2M6Wz5qLHnTNywh13900g+umhgLvciM=";
      };
    });
  })];

  environment.systemPackages = with pkgs; [
    blender
    # GTK theme support (basic) for GTK apps e.g. inkscape
    gnome.adwaita-icon-theme

    rx
    aseprite-unfree
    gimp
    
    synfigstudio
    inkscape-with-extensions
  ];
}