nvim/lua/plugins/rustacean.lua

return {
  "mrcjkb/rustaceanvim",
  lazy = false,
  opts = {
    server = {
      default_settings = {
        -- rust-analyzer language server configuration
        ["rust-analyzer"] = {
          cargo = {
            targetDir = true,
            buildScripts = {
              enable = false,
            },
          },
          checkOnSave = true,
          -- check = {
          --   command = "clippy",
          -- },
        },
      },
    },
  },
}