Add a try_require utility rather than checking packer

neovim/lua/plugins/lsp.lua

@@ -30,8 +30,8 @@ function M.config_lsp_ui()
         vim.fn.sign_define(hl, { text = icon, texthl = hl, numhl = hl })
     end
 
-    if utils.is_plugin_loaded("trouble") then
-        require("trouble").setup({
+    utils.try_require("trouble", function(trouble)
+        trouble.setup({
             fold_open = "▼",
             fold_closed = "▶",
             signs = {
@@ -42,7 +42,7 @@ function M.config_lsp_ui()
                 other = "",
             },
         })
-    end
+    end)
 end
 
 local function default_attach(client, bufnr)
@@ -108,10 +108,7 @@ local function default_attach(client, bufnr)
     end
 
     -- Some override some fuzzy finder bindings to use lsp sources
-    if packer_plugins["nvim-lspfuzzy"] then
-        buf_set_keymap("n", "<leader>t", "<cmd>lua vim.lsp.buf.document_symbol()<CR>", opts)
-        -- buf_set_keymap("n", "<leader>ft", "<cmd>lua vim.lsp.buf.workspace_symbol()<CR>", opts)
-    elseif packer_plugins["telescope.nvim"] then
+    if utils.try_require("telescope.nvim") ~= nil then
         buf_set_keymap("n", "<leader>t", "<cmd>Telescope lsp_document_symbols<CR>", opts)
         buf_set_keymap("n", "<leader>ft", "<cmd>Telescope lsp_dynamic_workspace_symbols<CR>", opts)
     end
@@ -153,14 +150,13 @@ function M.config_lsp()
             },
         },
     })
-    if utils.is_plugin_loaded("null-ls.nvim") then
-        M.config_null_ls()
+    utils.try_require("null-ls", function()
         lsp_config["null-ls"].setup({ capabilities = capabilities, on_attach = default_attach })
-    end
+    end)
 end
 
 function M.config_lsp_saga()
-    local saga = require("lspsaga")
+    utils.try_require("lspsaga", function(saga)
         saga.init_lsp_saga({
                 error_sign = "🔥",
                 warn_sign = "⚠️",
@@ -172,10 +168,11 @@ function M.config_lsp_saga()
                     sign = false,
                 },
             })
+    end)
 end
 
 function M.config_null_ls()
-    local null_ls = require("null-ls")
+    utils.try_require("null-ls", function(null_ls)
         null_ls.setup({
                 sources = {
                     -- Generic
@@ -203,6 +200,6 @@ function M.config_null_ls()
                     null_ls.builtins.formatting.stylua,
                 },
             })
+        end)
     end
-
 return M

neovim/lua/utils.lua

@@ -98,4 +98,23 @@ function M.is_plugin_loaded(name)
     return _G["packer_plugins"] and packer_plugins[name] and packer_plugins[name].loaded
 end
 
+-- Try to require something and perform some action if it was found
+function M.try_require(name, on_found, on_notfound)
+    local status, module = pcall(require, name)
+    if status then
+        if on_found ~= nil then
+            on_found(module)
+        end
+
+        return module
+    else
+        if on_notfound ~= nil then
+            on_notfound(name)
+        end
+
+        return nil
+    end
+
+end
+
 return M