nvim/lua/rua/plugins/lang/rust.lua

return {
  {
    "hrsh7th/nvim-cmp",
    dependencies = {
      {
        "Saecki/crates.nvim",
        event = { "BufRead Cargo.toml" },
        opts = {
          completion = {
            cmp = { enabled = true },
          },
        },
      },
    },
    ---@param opts cmp.ConfigSchema
    opts = function(_, opts)
      opts.sources = opts.sources or {}
      table.insert(opts.sources, { name = "crates" })
    end,
  },
  {
    "Saecki/crates.nvim",
    event = { "BufRead Cargo.toml" },
    opts = {
      completion = {
        cmp = { enabled = true },
      },
    },
  },
  {
    "mrcjkb/rustaceanvim",
    version = "^4", -- Recommended
    ft = { "rust" },
    opts = {
      server = {
        on_attach = function(_, bufnr)
          vim.keymap.set("n", "<leader>ca", function()
            vim.cmd.RustLsp("codeAction")
          end, { desc = "Code Action", buffer = bufnr })
          vim.keymap.set("n", "<leader>dr", function()
            vim.cmd.RustLsp("debuggables")
          end, { desc = "Rust Debuggables", buffer = bufnr })
        end,
        default_settings = {
          -- rust-analyzer language server configuration
          ["rust-analyzer"] = {
            cargo = {
              allFeatures = true,
              loadOutDirsFromCheck = true,
              buildScripts = {
                enable = true,
              },
            },
            -- Add clippy lints for Rust.
            checkOnSave = true,
            procMacro = {
              enable = true,
              ignored = {
                ["async-trait"] = { "async_trait" },
                ["napi-derive"] = { "napi" },
                ["async-recursion"] = { "async_recursion" },
              },
            },
          },
        },
      },
    },
    config = function(_, opts)
      vim.g.rustaceanvim = vim.tbl_deep_extend("keep", vim.g.rustaceanvim or {}, opts or {})
      if vim.fn.executable("rust-analyzer") == 0 then
        print("**rust-analyzer** not found in PATH, please install it.\nhttps://rust-analyzer.github.io/")
        -- LazyVim.error(
        --   "**rust-analyzer** not found in PATH, please install it.\nhttps://rust-analyzer.github.io/",
        --   { title = "rustaceanvim" }
        -- )
      end
    end,
  },
}