@NotTheDr01ds wouldn't there be any value in a specific answer for the question?
@NotTheDr01ds I think it's good that they bump such questions - gives us an opportunity to close or improve them... doesn't matter much that the OP is not around
@NotTheDr01ds Wouldn't be an overkill to install an X server on WSL just to run alarm-clock-applet? Also it's not exactly a GUI program, but a notification area applet, which AFAIK doesn't even work on GNOME 3 (I guess it might work on GNOME 2/MATE/Unity). So this would need a huge effort to make it work in WSL, if it could even work at all.
Perhaps the question could be answered stating the reason why that would be an overkill, with the aforementioned issues, and suggest another terminal-based alternative, which would be much more suitable for WSL. A link to the dupe that @NotTheDr01ds suggested for how to run GUI apps in WSL would be also a good reference.
@BeastOfCaerbannog That's a completely fair point - An applet is much more complex than just an app. In that case, wouldn't it be a duplicate of Opening Ubuntu 20.04 Desktop on WSL2
Or would it not even work there since if it only works with Gnome 2?
@NotTheDr01ds Another good reference! But still that would be an overkill. The OP clearly doesn't know that the primary use of WSL is as a command line (at least until now).
@NotTheDr01ds It could be the case too. I'm not 100% for the environments that alarm-clock-applet runs on, but by the looks of it, it's probably some of those I mentioned before.