feat: add nvim-metals

init.lua

@@ -155,7 +155,7 @@ vim.opt.cursorline = true
 vim.opt.scrolloff = 10
 
 -- fix indentation
-vim.o.tab = 4
+-- vim.o.tab = 4
 vim.o.softtabstop = 4
 vim.o.shiftwidth = 4
 
@@ -755,6 +755,32 @@ require('lazy').setup({
   -- Highlight todo, notes, etc in comments
   { 'folke/todo-comments.nvim', event = 'VimEnter', dependencies = { 'nvim-lua/plenary.nvim' }, opts = { signs = false } },
 
+  {
+    'scalameta/nvim-metals',
+    dependencies = {
+      'nvim-lua/plenary.nvim',
+    },
+    ft = { 'scala', 'sbt', 'java' },
+    opts = function()
+      local metals_config = require('metals').bare_config()
+      metals_config.on_attach = function(client, bufnr)
+        -- your on_attach function
+      end
+
+      return metals_config
+    end,
+    config = function(self, metals_config)
+      local nvim_metals_group = vim.api.nvim_create_augroup('nvim-metals', { clear = true })
+      vim.api.nvim_create_autocmd('FileType', {
+        pattern = self.ft,
+        callback = function()
+          require('metals').initialize_or_attach(metals_config)
+        end,
+        group = nvim_metals_group,
+      })
+    end,
+  },
+
   { -- Collection of various small independent plugins/modules
     'echasnovski/mini.nvim',
     config = function()