If I could find something that offers a “run this cli command on file saving”, that’s really about the biggest requirement I hope to have in place.

You can do that via CLI, too, by the way. You can watch your source code directory for file changes with entr: https://manpages.org/entr
Make sure to see the examples at the end of the man page, since usage isn't entirely obvious...

And if you want KDevelop without being so focused on KDE development, then that's basically Kate: https://kate-editor.org/
If you install the LSP servers for your toolchain (and check that Kate auto-starts them), then it can assist pretty well for different programming languages (i.e. virtually indistinguishable from VSCode, as far as I'm aware).

Gonna be that asshole who suggests neovim. Same deal with the insane plugin community but we have more control and can do more stupid (and useful) shit.

I've been using it for laravel development for years (though with blade mainly) along with, on seperate repos, react and react native. The tailwind language server works well too

On the running commands on save yeah you can either use hooks or just overload the :w command to do whatever you want. If you take the later route, anything after a ! In command mode runs as a command in your default shell (non-interactive mode)

It'll take some time to build out something to the level of vscode yourself but it's been very worth it for me. I feel like the editor is an extension of myself. Yeah, ok, that sentence felt like a bit too much dick sucking even to me. Seriously though it may seem simplistic at first but with the right plugin setup I've yet to find anything I miss from vscode and I was an absolute unit of a power user on that thing.

Glad you're able to adjust to a new workflow too because you'll need to be if you take the plunge.

Anyway, hope you find something even if you don't pick neovim. Just don't pick Emacs or I swear to god I will cry

I've been keeping an eye on the Zed editor. Developed by some of the same people that made Atom. It's probably stable enough now that I need to give it another go

Eclipse Theia is a VSCode-like IDE

• https://theia-ide.org/
• https://github.com/eclipse-theia/theia/

I don't know if all your desired tooling is covered.

Eclipse Theia is meant to be a 1:1 replacement for VSCode, and it's a completely independent rewrite. Afaik the only part they share is the "Monaco" text editor component, but there's not really much lock-in risk there.

Eclipse are also the people who run the open-vsx extension registry.

Personally, I am very happy with Sublime Text and don't see myself using anything else any time soon. But if I did need an alternative, Theia might be my first choice.

Edit: another one that hasn't been mentioned yet is Lite-XL

Kind of interested in this too. I just started redeveloping a php site in codeigniter bringing it from version 2 to 4 and when I first attempted this a year ago, it didn't seem that neovim support wasn't very good for php.. I could be mis-remembering. I keep a nice setup with neovim and tmux which also works great in an i3 environment.

I've basically been just using a basic neovim setup for now (haven't even setup the language servers yet) while wrestling the app back up to speed. But with a neotree and multiple tmux windows for commands, it's still been a pretty fluid.