I was going to try software distributed as a flatpak. Step 1 was make sure flatpak is supported
I went to https://flatpak.org/getting.html and for linux mint and ubuntu it said:
Flatpak support is built into Linux Mint 18.3 and newer.
For Ubuntu 16.04, 16.10, 17.04 and 17.10 a PPA is available. To install, run:
Has anyone install flatpak on LM 17.3 (kde)?