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Scala

info

You can enable the extra with the :LazyExtras command. Plugins marked as optional will only be configured if they are installed.

Below you can find a list of included plugins and their default settings.

caution

You don't need to copy the default settings to your config. They are only shown here for reference.

nvim-treesitter​

opts = { ensure_installed = { "scala" } }

nvim-metals​

opts = {}

nvim-lspconfig​

opts = {
  servers = {
    metals = {
      keys = {
        {
          "<leader>me",
          function()
            require("telescope").extensions.metals.commands()
          end,
          desc = "Metals commands",
        },
        {
          "<leader>mc",
          function()
            require("metals").compile_cascade()
          end,
          desc = "Metals compile cascade",
        },
        {
          "<leader>mh",
          function()
            require("metals").hover_worksheet()
          end,
          desc = "Metals hover worksheet",
        },
      },
      init_options = {
        statusBarProvider = "off",
      },
      settings = {
        showImplicitArguments = true,
        excludedPackages = { "akka.actor.typed.javadsl", "com.github.swagger.akka.javadsl" },
      },
    },
  },
  setup = {
    metals = function(_, opts)
      local metals = require("metals")
      local metals_config = vim.tbl_deep_extend("force", metals.bare_config(), opts)
      metals_config.on_attach = LazyVim.has("nvim-dap") and metals.setup_dap or nil

      local nvim_metals_group = vim.api.nvim_create_augroup("nvim-metals", { clear = true })
      vim.api.nvim_create_autocmd("FileType", {
        pattern = { "scala", "sbt" },
        callback = function()
          metals.initialize_or_attach(metals_config)
        end,
        group = nvim_metals_group,
      })
      return true
    end,
  },
}

nvim-dap (optional)​

opts = function()
  -- Debug settings
  local dap = require("dap")
  dap.configurations.scala = {
    {
      type = "scala",
      request = "launch",
      name = "RunOrTest",
      metals = {
        runType = "runOrTestFile",
        --args = { "firstArg", "secondArg", "thirdArg" }, -- here just as an example
      },
    },
    {
      type = "scala",
      request = "launch",
      name = "Test Target",
      metals = {
        runType = "testTarget",
      },
    },
  }
end