Please document how to install this using pip and run without installation

[probonopd]

Please document how to install this using pip and run without Flatpak, without Gnome Builder, and without installation. Something along those lines:

sudo apt-get -y install libdbus-1-dev # Why is this even needed
sudo apt-get -y install gettext

sudo python3 -m venv venv
. ./venv/bin/activate
pip3 install -r requirements.txt
pip3 install meson ninja # Why are these even needed for a Python application
pip3 install pygobject # This was forgotten in requirements.txt
meson build

./build/src/gearlever

python3 src/main.py
Traceback (most recent call last):
  File "/tmp/gearlever/src/main.py", line 23, in <module>
    from .lib.utils import get_gsettings, make_option
ImportError: attempted relative import with no known parent package

# Apparently one needs to remove all the "." in "from .something import".

# But then we get 

$ python3 src/main.py
Traceback (most recent call last):
  File "/tmp/gearlever/src/main.py", line 23, in <module>
    from lib.utils import get_gsettings, make_option
  File "/tmp/gearlever/src/lib/utils.py", line 11, in <module>
    from .costants import APP_ID
  File "/tmp/gearlever/src/lib/costants.py", line 8, in <module>
    ONE_UPDATE_AVAILABLE_LABEL = _('1 update available')
                                 ^
NameError: name '_' is not defined

[probonopd]

Need to add

from gettext import gettext as _

at the top of src/lib/costants.py.

After removing lots of . and .. from the import statements, getting

$ python3 src/main.py
Traceback (most recent call last):
  File "/tmp/gearlever/src/main.py", line 26, in <module>
    from GearleverWindow import GearleverWindow
  File "/tmp/gearlever/src/GearleverWindow.py", line 21, in <module>
    from InstalledAppsList import InstalledAppsList
  File "/tmp/gearlever/src/InstalledAppsList.py", line 16, in <module>
    from preferences import Preferences
  File "/tmp/gearlever/src/preferences.py", line 17, in <module>
    class Preferences(Adw.PreferencesWindow):
  File "/tmp/gearlever/src/preferences.py", line 147, in Preferences
    def create_boolean_settings_entry(self, label: str, key: str, subtitle: str = None) -> Adw.SwitchRow:
                                                                                           ^^^^^^^^^^^^^
  File "/tmp/gearlever/venv/lib/python3.11/site-packages/gi/module.py", line 130, in __getattr__
    raise AttributeError("%r object has no attribute %r" % (
AttributeError: 'gi.repository.Adw' object has no attribute 'SwitchRow'

[probonopd]

Probably this is assuming a newer version of libadwaita to be on the system than what is actually present on Debian GNU/Linux 12 (bookworm).

This project seems to use almost every technology and practice I'd recommend against using. Especially libadwaita, a library that ensures that applications won't work properly anywhere but in Gnome.

It would probably best be rewritten in PyQt in no time.