In portage is version 1.8.19 which Arduino's site deems "legacy" https://www.arduino.cc/en/software. Current version of the IDE is 2.2.1. Reproducible: Always
I looked into trying to bump and it looks like there has been a complete change in the method of availability. See https://docs.arduino.cc/software/ide-v2/tutorials/getting-started/ide-v2-downloading-and-installing I do not think without a maintainer bumping the Arduino IDE will be possible. I wonder if Arduino should just be removed from portage.
I've done further digging into setting up the current Arduino IDE and finally succeeded in installing their current IDE. The process is entirely different, you just download their FUSE APP and run it (I unzipped it, but ran it afterwards). They rely on Filesystem in Userspace ("FUSE") which is sys-fs/fuse, and they require version 2.x whereas FUSE is at version 3. I may post to the forum a "howto" documenting what you do to run Arduino's current IDE. In the meantime 1.8.19 is as far as it goes.
