Enable snaps on Raspberry Pi and install Chirp

Snaps are applications packaged with all their dependencies to run on all
popular Linux distributions from a single build. They update automatically and
roll back gracefully.

Snaps are discoverable and installable from the Snap Store, an app store with
an audience of millions.

Enable snapd

On a Raspberry Pi running the latest version of Raspbian snap can be installed
directly from the command line:

$ sudo apt update
$ sudo apt install snapd

You will also need to reboot your device:

$ sudo reboot

After this, install the core snap in order to get the latest snapd:

$ sudo snap install core

Install Chirp

To install Chirp, simply use the following command:

sudo snap install chirp-snap --channel=latest/edge  <-- to install the latest CHIRP
sudo snap refresh chirp-snap --channel=latest/edge  <-- to update/upgrade CHIRP

CHIRP is a free, open-source tool for programming your amateur radio.

CHIRP is a free, open-source tool for programming your amateur radio. It 
supports a large number of manufacturers and models, as well as provides a way 
to interface with multiple data sources and formats.

First Time Installation Notes

You should run the following command in a command prompt to give

$ sudo snap connect chirp-snap:raw-usb