doomemacs VS lsp-mode

Yes, you need to install Emacs. It is probably available from whatever package manager your system uses.

I prefer Doom (https://github.com/doomemacs/doomemacs) to Spacemacs. However I haven't looked at Spacemacs for many years; perhaps it's now on par with Doom.

Ever since I've started my Emacs journey it seemed like the wholy grail to have your own (vanilla!) configuration without any hard dependencies on frameworks like Doom or Spacemacs. There are plenty of dotemacs configurations ouf there which can serve as a great source of inspiration.

Use doomemacs for a start. It really optimizes startup time and offers vast included modules as well as great package management. https://github.com/doomemacs/doomemacs/blob/master/docs/gett...

I installed Corfu using this PR in doom https://github.com/doomemacs/doomemacs/pull/7002

The doom documentation does a pretty good job of walking you through this: - https://github.com/doomemacs/doomemacs/blob/master/docs/getting_started.org - https://noelwelsh.com/posts/doom-emacs/

I was poking around and opened up the README.org file in the Doom Emac's faust module and i saw these nifty nagivation things that weren't coming form within the file. I didn't see anything in the directory that hinted at it (to me) either.

I tried this code: $ git clone --depth 1 https://github.com/doomemacs/doomemacs ~/.config/emacs ~/.config/emacs/bin/doom install

I am a long-time Emacs user and used to maintain my own config, but I switched to Doom Emacs [1] a year ago. Doom Emacs is like a pre-packaged/pre-configured emacs distro. You still need to configure the features that you want to use, but it's a lot easier (and faster) than having to do everything from scratch, and definitely if you already have some emacs background anyway. For me, it makes the newer, more advanced, features more accessible. Since switching, I started to use Emacs more again.

[1] https://github.com/doomemacs/doomemacs

Try an emacs distribution and see if you like it:https://github.com/doomemacs/doomemacs

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?