refactor(scala): use new patch_func helper function

Author: mehalter

lua/astrocommunity/pack/scala/init.lua

@@ -23,17 +23,16 @@ return {
       },
     },
     opts = function()
-      local metals = require "metals"
+      local metals, astrocore = require "metals", require "astrocore"
       local astrolsp_avail, astrolsp = pcall(require, "astrolsp")
       local user_config = astrolsp_avail and astrolsp.lsp_opts "metals" or {}
-      if require("astrocore").is_available "nvim-dap" then
-        local on_attach = user_config.on_attach
-        user_config.on_attach = function(...)
-          if type(on_attach) == "function" then on_attach(...) end
+      if astrocore.is_available "nvim-dap" then
+        user_config.on_attach = astrocore.patch_func(user_config.on_attach, function(orig, ...)
+          orig(...)
           metals.setup_dap()
-        end
+        end)
       end
-      return require("astrocore").extend_tbl(metals.bare_config(), user_config)
+      return astrocore.extend_tbl(metals.bare_config(), user_config)
     end,
     config = function(self, opts)
       vim.api.nvim_create_autocmd("FileType", {