Upgrade B9-Robot for 22.04 compatibility.

Yes, really... for something so simple a new release is required for
each new operating system.  How screwed-up is that?  At least now I
understand Snap and FlatPak, because the alternative can be bonkers.

README.md

@@ -1,18 +1,20 @@
 # B9 Robot - Overview
-A configurable Python daemon that dictates system notification messages audibly exclusive to Linux operating systems.
+A configurable Python daemon that dictates system notification messages audibly exclusive to Linux operating systems.  This has been tested in Ubuntu 20.04 and 22.04.
 
 ## Prerequisites
 1.  Festival speech engine
-2.  Python 3.6
+2.  ~~Python 3.6~~ *Python v10 is now supported*
 3.  Pip
 4.  VirtualEnv
 5.  All other dependencies are recorded in `requirements.txt`.  To install run `pip -r requirements.txt` from the repository root.
 
 # Install
-There is an install script that has been tested on Ubuntu 20.04 (Focal).  For other distributions I'm afraid you're on your own.  
+There is an install script that has been tested on Ubuntu 20.04 (Focal) and 22.04 (Jammy).  For other distributions I'm afraid you're on your own, I am not remotely responsible for the absolute mess that modern dependency management has become.  
 
 ## Rant
-I wasn't prepared for the absolute dependency hell that Python has become and I am still shocked that a custom install script is necessary for something so simple.  This is my first (and last) Python project I will invest time in.  Nobody has time for playing endless games of depedency whack-a-mole.
+I wasn't prepared for the absolute dependency hell that Python has become and I am still shocked that a custom install script is necessary for something so simple.  What really gets me is that I have only ever heard a handful of engineers call out this disaster trainwreck of dependency management that modern software engineering has become.  Nobody has time for playing endless games of dependency whack-a-mole, where's your divine discontent?
+
+It's a bit overkill installing *OpenCV* just to check if the video camera is turned-on, but I want to use abstractions to avoid platform-dependent behaviour.  I suppose, if I get really annoyed, I'll just call `lsof /dev/video%d` from Python and be done with it.
 
 # Configuration
 To configure this daemon see the sample configuration file enclosed in this repository.  Place the configuration file at `/etc/b9robot/mappings.yaml` even if that means moving and renaming the bundled `mappings.example.yaml`.  You can edit this configuration and send the _hang-up_ (`HUP`) signal to b9robot to automatically reload the configuration upon receipt of the next notification.

b9robot.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 import gi
 
@@ -422,7 +422,7 @@ def str_to_time_tuple(string: AnyStr):
 		return x.tm_hour, x.tm_min
 
 	with open('/etc/b9robot/mappings.yaml') as f:
-		docs = yaml.load_all(f)
+		docs = yaml.safe_load_all(f)
 
 		for doc in docs:
 			name = doc.get('name')

install.sh

@@ -1,8 +1,16 @@
 #!/bin/sh -e
 
-sudo apt -y install libsm6 libxrender1 libfontconfig1 python3.6-dev
+apt -y install libsm6 libxrender1 libfontconfig1 libxslt1-dev
 cd `dirname $0`
-virtualenv --python `which python3.6` .
+virtualenv --python `which python3` .
 . bin/activate
 pip install -r requirements.txt
-sed -i -e '1iimport _festival' -e '1,6{/^try:$/,/^[[:space:]]*import _festival/{d}}' lib/python3.6/site-packages/festival.py
+[ -d lib/python3.6/site-packages/festival.py ] && sed -i -e '1iimport _festival' -e '1,6{/^try:$/,/^[[:space:]]*import _festival/{d}}' lib/python3.6/site-packages/festival.py
+
+mkdir -p /etc/b9robot/
+cp logging.conf /etc/b9robot/
+chmod go+rX -R /etc/b9robot/
+
+cp b9robot.py /usr/local/bin/
+cp b9robot.service /lib/systemd/user/
+systemctl --user enable b9robot

requirements.txt

@@ -1,12 +1,12 @@
-PyYAML == 5.3.1
-beautifulsoup4 == 4.9.3
-lxml == 4.6.2
-cronyo == 0.4.2
-dbus-python == 1.2.16
-opencv-python-headless == 4.4.0.42
+opencv-python-headless >= 4.4.0.42, < 4.8.0
+PyYAML >= 5.3.1
+beautifulsoup4 >= 4.9.3
+lxml >= 4.6.2
+cronyo >= 0.4.2
+dbus-python >= 1.2.16
 git+https://github.com/techiaith/pyfestival#festival
-pygobject == 3.38.0
-xlib == 0.21
-html5lib == 1.1
-systemd-python == 234
-playsound == 1.3.0
+pygobject >= 3.38.0
+xlib >= 0.21
+html5lib >= 1.1
+systemd-python >= 234
+playsound >= 1.3.0