Install Pomodoro Plugin on Ubuntu 20.04
Get a Pomodoro Desktop Plugin Working in Minutes

Removing Not Functional Installs
If as I did, you had some not successful installations, here’s a way to handle with the garbage. If not, just move to the next step
Uninstalling the gnome-shell apt extension
sudo apt remove gnome-shell-pomodoro
Building and Installing Manually
Before Install
Verify what version of gnome you are running with the command above
$ gnome-shell — version
You will get a response, like
GNOME Shell 3.36.7
1. Download the desired version
Download the latest version from the official repo, replacing the version with the one that matches with your gnome shell.
If your actual gnome version is 3.36.7, set gnome-3.36 as the desired version, like the example below
$ git clone -b gnome-3.36 https://github.com/codito/gnome-pomodoro.git
2. Install the dependencies
$ sudo apt-get install autoconf-archive gettext valac pkg-config desktop-file-utils appstream-util libappstream-glib-dev libglib2.0-dev gsettings-desktop-schemas-dev gobject-introspection libgirepository1.0-dev libsqlite3-dev libgom-1.0-dev libgstreamer1.0-dev libgtk-3-dev libcanberra-dev libpeas-dev libappindicator3-dev
3. Install
Open the folder you downloaded
$ cd gnome-pomodoro
Run the Installation commands
$ ./autogen.sh — prefix=/usr — datadir=/usr/share
make
sudo make install
You should be able to see the app along with the others
References:
- Arun Mahapatra: https://github.com/codito
- Get Pomodoro Website: https://gnomepomodoro.org/