When I migrated from Android to iPhone, syncthing was my main pain point. There is Möbius Sync, even though not open source, at least it’s an one-time small payment, which is fair considering the dev license cost. Unfortunately it’s not as reliable as the Android official app or the fork, I guess Apple is very strict with background processing, but hey it’s better than nothing.
I worked at a company where data scientists wrote python code using pandas and we had port it to java and a library called keanu that was very useful but soon became unmaintained.
Of course this was very time consuming and unrewarding, all because only java applications could be deployed to production due to a stupid top-down decision.
This GraalPy sounds like something I wish existed back then.
jep[0] has existed for a while now, and does what GraalPy is doing quite well.
I'm using it for similar purposes as you stated and for that it works quite well. A research group I am collaborating with does a lot of their work in one Java application (ImageJ for microscopy), so by integrating my Python processing code into that application, it finds its way a lot quicker into the daily workflows of everyone in that group.
Most recently I've also extended the jep setup to include optional Python version bootstrapping via uv[1], so that I can be sure that the plugins I'm writing have the correct Python version available, without people having to install that manually on the machine.
Jython has historically lagged hard, often falling behind for very extended periods. For a time their releases basically just stopped, which led to them missing support for pretty much anything between 2.7 and 3.6 (iirc). I know the project basically rebooted at some point, but I've since lost interest.
Reminds me of that part of Pirates of the Silicon Valley, where the people of the Homebrew Computer Club were trying to find a use for the MITS Altair. Although Quantum Computers are several magnitude orders more complex, it’s amusing to see history repeating itself.
In their home page they state: "We make MiniOS beautiful so that you can enjoy using it every day and for any task. We pay great attention to every detail in the operating system", and there are mentions to Mandriva, Debian, even Fluxbox, nowhere Xfce is mentioned, it's almost like they are implying the aforementioned qualities are their merit alone.
The file managers for Gnome and KDE are both really crashy for me, too. I don't know which graphical file manager to use in Linux without going back to MC or something.
Linux is the only desktop OS I use where application crashes and major glitches (some subsystem of KDE crashing, for example) are still like a once every hour or two occurrence, even when not doing anything especially odd or taxing.