I tested OpenMSX 16.0 with Pinephone Keyboard

Easy install:
sudo apt-get install openmsx

It has ready made icon for Maemo! But without right configuration you have to start it from X Terminal, example command:
openmsx -cart lily.rom
(lily.rom, was name name of cartridge rom image file)

I only made fast simple rom cartridge test. All seems to work very well. I used default machine setup (that lacks Basic-rom!), because it wasn't easy setup specific MSX computer, because separate OpenMSX Catapult configuration GUI has too much graphics problems. I tested Catapult version 16.0, but it is not latest, so if somebody want make it more Leste compatible version here is latest sources: https://github.com/openMSX/catapult

If somebody know how to setup specific machine configuration to default with this version of OpenMSX, it would be nice get info, because it seems to be different than older versions of OpenMSX.