vim + w0rp/ale, ale has LSP support and I now use it as a one stop shop for go to dec, find refs, and autocomplete. It has support for linting with cargo, rustc, rls, and autoformatting with rustfmt. rustup makes installing rls extremely painless.

mind sticking up the relevant sections of your vimrc somewhere so I could take a look?

the rust stuff in my vim dates to v. early post 1.0 and would love to link ale + rls up.

Sure, install w0rp/ale using your favorite plugin manager, install rustup and run:

  rustup component add rls-preview rust-analysis rust-src --toolchain nightly

then add this to .vim/ftplugin/rust.vim:

  let b:ale_linters = {'rust': ['rls','cargo','rustc']}
  let g:ale_fixers = {'rust': ['rustfmt']}
  let g:ale_completion_enabled = 1

perfect, thanks!

IntelliJ IDEA CE is way better than VS Code, IMHO. Much more reliable in the type inference.

In my experience, the majority of the community uses VSCode with the RLS plugin or IntelliJ with the rust plugin (which is, ironically, written in Kotlin)