[thesz]

I think that LSP is a Language Server Protocol. I do not use that. I can understand its utility but I do not use it.

"Compiler error messages as I type" distract me from, well, typing. I can pause to think and then I get an error message for my still incomplete code. I cannot help but notice that and that interferes with the train of thought.

I have trouble with my keyboard lately (two keys do not produce reliable key press events) and only then I started to use CtrlN in vim to autocomplete.

The need of variable renaming is often related to variables in most mainstream languages having multiple roles due to side effects: on input an array has one meaning, after execution of some function the same array now has different meaning. I prefer not to do so and greatly prefer languages with controlled side effects.

[da39a3ee]

OK. For reference, I was an Emacs user for 20 years, and participated heavily in emacs extension development. I used to think like you early on. But, especially if you use languages with expressive/complex type systems, having the editor be able to inform you about types is very useful. So I understand where you're coming from, but you're probably being too absolutist and are upholding preferences that you should re-examine. For example, it's basically silly to write Rust without using rust-analyzer. I agree that feedback can be a distraction while typing but it should be possible to tune your IDE editor to not display anything until a specified amount of time has passed with no keypresses.

[thesz]

I do not write Rust. My day-to-day job is C++'s application support and, frankly, what Rust offers does not help there.

When I do programming for fun, I prefer to use Haskell into which "Rust" can be embedded to, if I need that. But, the problems I am interested to look deep into do not benefit from borrow checker's checks. Sparse non-negative matrix language modeling is not a thing Rust can help with. ;)

(any continuous problems like ML do not benefit from borrow checker)

And I do not use emacs. I use vim. As an EDITOR for midnight commander. I go to ghci when I need feedback, not earlier. ;)