python3
gtk3
python-dbus
python-setuptools
gtksourceview3
snapper-git (AUR)
python3
dbus-1-python3
python-gtksourceview-devel
python3-setuptools
$ sudo apt install python-setuptools snapper gir1.2-gtksource-3.0
$ git clone https://github.com/ricardo-vieira/snapper-gui/
$ cd snapper-gui/
# python3 setup.py install
