installing Krita
Use sudo add-apt-repository ppa:kritalime/ppa -y && sudo apt-get update && sudo apt-get install krita -y to install from Ubuntu PPA.
Personal experience
Tested in Kubuntu 17.10.
licensing
No rights reserved: CC0 1.0.
Use sudo add-apt-repository ppa:kritalime/ppa -y && sudo apt-get update && sudo apt-get install krita -y to install from Ubuntu PPA.
Tested in Kubuntu 17.10.
No rights reserved: CC0 1.0.