Advice on Bitmessage on Whonix. Bitmessage guide needs to be improved?

Hello everyone, I am following the guide here, to install and run Bitmessage: http://www.dds6qkxpwdeubwucdiaord2xgbbeyds25rbsgr73tbfpqpt4a6vjwsyd.onion/wiki/BitMessage

After completing the guide the Bitmessage fails to start.

I do following, in the related anon-whonix workstation:

user@host:~$ ~/PyBitmessage/src/bitmessagemain.py
#the message states that ‘python’ is missing

I install the ‘python’ package into the whonix-ws-16 template as required

user@host:~$ sudo apt install python

installation complete, poweroff and start anon-whonix

next attempt to run Bitmessage

user@host:~$ ~/PyBitmessage/src/bitmessagemain.py
Traceback (most recent call last):
File “/home/user/PyBitmessage/src/bitmessagemain.py”, line 35, in
import shared
File “/home/user/PyBitmessage/src/shared.py”, line 19, in
import highlevelcrypto
File “/home/user/PyBitmessage/src/highlevelcrypto.py”, line 16, in
from bmconfigparser import config
File “/home/user/PyBitmessage/src/bmconfigparser.py”, line 10, in
from six import string_types
ImportError: No module named six

Any advice how to run the beast?

This script download the the latest BM AppImage file, save it and link it as $HOME/PyBitmessage.AppImage

#!/bin/bash

set -e

LIST_URL="https://appimage.bitmessage.org/releases"
LAST_URL="$(wget -q $LIST_URL -O- | grep -oP "[[:digit:]]{8}" | tail -n1)"
BM_IMG="$(wget -q $LIST_URL/$LAST_URL -O- | grep -oE ">PyBitmessage-.*-x86_64.AppImage<")"
BM_IMG=${BM_IMG:1:-1}
APPIMAGE_URL="$LIST_URL/$LAST_URL/$BM_IMG"

DEST_FILE="$HOME/$BM_IMG"
LINK="$HOME/PyBitmessage.AppImage"

wget -c $APPIMAGE_URL -O $DEST_FILE
chmod u+x $DEST_FILE
cp -v -fl $DEST_FILE $LINK