Lisp support and so on

lua/plugins/nvim-metals.lua

@@ -0,0 +1,26 @@
+return {
+  '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
+      vim.keymap.set('n', 'K', vim.lsp.buf.hover)
+    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,
+}