Linux Shout published two ways to install MyPaint on Ubuntu Linux.
2 ways to Install MyPaint on Ubuntu 22.04 | 20.04 LTS Linux
Create beautiful freehand pictures on your PC by installing MyPaint on Ubuntu 22.04 Jammy or 20.04 Focal Fossa using the command terminal.
2 ways to Install MyPaint on Ubuntu 22.04 | 20.04 LTS Linux