exwm VS lsp-mode

5. They each have come up with their own personal projects, so I tailor exercises to help them with problems that they need to solve

I wanted this to be a happy experience, so I have never pushed them, but always challenge them to push themselves. I spend a few hours with them every weekend, then a couple of hours with them mid week to help them with challenges. But that is not how I started. I started with 1 hour first thing every morning Monday to Friday to teach them the basics and get them inspired. If they seemed drained, or I sensed that they needed a break, I just let them have a day off.

We also play erion mud [3] and sometimes hexonyx [4] because I wanted them to understand what a mud is all about and to build up interest. I am really into text-based games, so not surprisingly we play nethack (rogue like) [5]. I am also into interactive fiction and started them off on Adventure [6]. If you are interested in interactive fiction, then you might enjoy reading "Twisty Little Passages - an approach to interactive fiction" by Nick Montfort [7].

Full disclosure, I believe that the main reason I am able to pull this all off is that my wife and I home-school our children. It is a challenge though. Very few families where we are from are similar to us in our philosophy of technology and education.

[1] https://www.amazon.com/GeeekPi-Raspberry-Cooling-Cooler-Heat...

[2] https://github.com/emacs-exwm/exwm

[3] https://www.erionmud.com/

[4] https://mud.hexonyx.com/

[5] https://www.nethack.org/

[6] https://quuxplusone.github.io/Advent/play.html

[7] https://www.amazon.com/Twisty-Little-Passages-Approach-Inter...

I also tried to the solutions suggested  and , but nothing worked. I moved the (setq lsp-keymap-...) line outside (and before) use-package. I also used :config (define-key lsp-load-map...) in my use-package block. But none of them worked.

Not sure how much this might help, but lsp-mode has lsp-yaml-select-buffer-schema and lsp-yaml-set-buffer-schema commands to pick schema from a list or set from a URI. Checking the source of them might give some hints about how the same could be implemented in eglot?

Beyond that you might as well embrace the suck and install autex with a language server: https://emacs-lsp.github.io/lsp-mode/

Smart completion these days is done primarily through LSP. eglot is fairly minimal but built-in as of 29, also available via GNU Elpa. lsp-mode is another option with more integrations and a bit more fleshed out.

lsp-mode: https://github.com/emacs-lsp/lsp-mode/issues/2080

Are you running emacs-29? It has numerous speed-ups compared to emacs-28 and older versions, many of them coded by Mattias Engdegård, e.g. commit def6fa4246. I have a fresh build of emacs-29 running on Linux and a new mac with an M1 CPU, and it's stupid fast. I don't use the native-comp feature. I rarely notice any hesitation or slowness. I don't use Elpy. I do use lsp mode.

Since you are doing code development, the first things to go for would be setting up your emacs packaging (installing use-package and melpa (use-package's documentation covers this) so you have more packages to choose from (do be careful to not just pick things willy nilly but research them a bit first)) and then setting up lsp-mode. lsp-mode lets you use LSP servers for the specific programming languages you work with in a somewhat unified fashion. You then need to install and setup the LSP servers for the languages you use, and possibly install language specific Emacs packages as support (note, Emacs has builtin functionality for many).

And first of all, I'm trying to understand, how is it connected to https://github.com/emacs-lsp/lsp-mode? I'm sure, that existed lsp implementations already parse source code. Why TreeSitter?