Any way to run clippy not only on save?

[LennyLizowzskiy]

Feature description

Is there a way to run "flychecks" on demand (at least in Normal mode)?
I don't see any mention of it in the documentation

Related rust-analyzer PR and rust-lang issue: rust-lang/rust-analyzer#13125, rust-lang/rust-analyzer#13785

[mrcjkb]

Yes, see "fly check" in the readme's usage section.

[LennyLizowzskiy]

Sorry, didn't see it

[LennyLizowzskiy]

@mrcjkb
Hi again.

RustLsp flyCheck doesn't seem to work

I ran it via this autocmd and also tried to run the command myself

autocmd({ "LspAttach", "FileAppendPost", "TextChangedI" }, {
        pattern = { "rust" },
        command = "RustLsp flyCheck run",
      })

File itself

Commented out these lines but diagnostics are still there

Even though it says that it ran clippy

Correct changes in diagnostics appear only when I save the file via :w. Lsp notifies that it ran clippy once again, but this time it works

[mrcjkb]

You still need to save the file for cargo or clippy to be able to check it.
flycheck is only useful if you have checkOnSave disabled in your rust-analyzer settings, so that it doesn't check every time you save (e.g. if doing so is costly).

Afaik, rust-analyzer currently doesn't support checking unsaved buffers.