astronvim-config/lsp/config/rust_analyzer.lua

return {
  settings = {
    ["rust-analyzer"] = {
      checkOnSave = {
        command = "clippy",
        extraArgs = {
          "--",
          "-W", "clippy::pedantic",
          "-W", "clippy::nursery",
          "-W", "clippy::unwrap_used",
          "-W", "clippy::expect_used",
        },
      },
    },
  },
}