Improve startuptime | remove un-needed plugins | lazy load plugin highlights too

removed nvim-gps as nvim-navic or winbar.nvim will be added when v0.8 neovim releases. Removed lsp signature as I was able to emulate showing args with the default signature help() window

lua/core/lazy_load.lua

@@ -0,0 +1,111 @@
+-- https://github.com/max397574/omega-nvim/blob/master/lua/omega/modules/ui/bufferline.lua
+local lazy_load = function(tb)
+   vim.api.nvim_create_autocmd(tb.events, {
+      pattern = "*",
+      group = vim.api.nvim_create_augroup(tb.augroup_name, {}),
+      callback = function()
+         if tb.condition() then
+            vim.api.nvim_del_augroup_by_name(tb.augroup_name)
+
+            -- dont defer for treesitter as it will show slow highlighting
+            -- This deferring only happens only when we do "nvim filename"
+            if tb.plugins ~= "nvim-treesitter" then
+               vim.defer_fn(function()
+                  vim.cmd("PackerLoad " .. tb.plugins)
+               end, 0)
+            else
+               vim.cmd("PackerLoad " .. tb.plugins)
+            end
+         end
+      end,
+   })
+end
+
+local M = {}
+
+M.bufferline = function()
+   lazy_load {
+      events = { "BufNewFile", "BufAdd", "TabEnter" },
+      augroup_name = "BufferLineLazy",
+      plugins = "bufferline.nvim",
+
+      condition = function()
+         return #vim.fn.getbufinfo { buflisted = 1 } >= 2
+      end,
+   }
+end
+
+M.colorizer = function()
+   lazy_load {
+      events = { "BufRead", "BufNewFile" },
+      augroup_name = "ColorizerLazy",
+      plugins = "nvim-colorizer.lua",
+
+      condition = function()
+         local items = { "#", "rgb", "hsl" }
+
+         for _, val in ipairs(items) do
+            if vim.fn.search(val) ~= 0 then
+               return true
+            end
+         end
+      end,
+   }
+end
+
+-- load certain plugins only when there's a file opened in the buffer
+-- if "nvim-file" is executed -> load the plugin after nvim gui loads
+-- This gives an instant preview of nvim with the file opened
+
+M.on_file_open = function()
+   lazy_load {
+      events = { "BufRead", "BufWinEnter", "BufNewFile" },
+      augroup_name = "BeLazyOnFileOpen",
+      plugins = "nvim-lsp-installer indent-blankline.nvim",
+
+      condition = function()
+         local file = vim.fn.expand "%"
+         return file ~= "NvimTree_1" and file ~= "[packer]" and file ~= ""
+      end,
+   }
+end
+
+M.treesitter = function()
+   lazy_load {
+      events = { "BufRead", "BufWinEnter", "BufNewFile" },
+      augroup_name = "Treesitter_lazy",
+      plugins = "nvim-treesitter",
+
+      condition = function()
+         local file = vim.fn.expand "%"
+         return file ~= "NvimTree_1" and file ~= "[packer]" and file ~= ""
+      end,
+   }
+end
+
+M.gitsigns = function()
+   -- taken from https://github.com/max397574
+   vim.api.nvim_create_autocmd({ "BufAdd", "VimEnter" }, {
+      callback = function()
+         local function onexit(code, _)
+            if code == 0 then
+               vim.schedule(function()
+                  require("packer").loader "gitsigns.nvim"
+               end)
+            end
+         end
+         local lines = vim.api.nvim_buf_get_lines(0, 0, -1, false)
+         if lines ~= { "" } then
+            vim.loop.spawn("git", {
+               args = {
+                  "ls-files",
+                  "--error-unmatch",
+                  vim.fn.expand "%",
+               },
+            }, onexit)
+         end
+      end,
+   })
+end
+
+return M

lua/core/options.lua

@@ -1,15 +1,15 @@
 local opt = vim.opt
 local g = vim.g
-
 local config = require("core.utils").load_config()
 
 g.nvchad_theme = config.ui.theme
+g.toggle_theme_icon = "   "
+g.transparency = config.ui.transparency
+g.theme_switcher_loaded = false
 
 -- use filetype.lua instead of filetype.vim
 g.did_load_filetypes = 0
 g.do_filetype_lua = 1
-g.toggle_theme_icon = "   "
-g.transparency = config.ui.transparency
 
 opt.laststatus = 3 -- global statusline
 opt.statusline = config.plugins.options.statusline.config
@@ -76,6 +76,19 @@ local default_plugins = {
    "vimballPlugin",
    "zip",
    "zipPlugin",
+   "python3_provider",
+   "python_provider",
+   "node_provider",
+   "ruby_provider",
+   "perl_provider",
+   "tutor",
+   "rplugin",
+   "syntax",
+   "synmenu",
+   "optwin",
+   "compiler",
+   "bugreport",
+   "ftplugin",
 }
 
 for _, plugin in pairs(default_plugins) do

lua/core/utils.lua

@@ -114,13 +114,6 @@ M.load_mappings = function(mappings, mapping_opt)
    end
 end
 
--- load plugin after entering vim ui
-M.packer_lazy_load = function(plugin)
-   vim.defer_fn(function()
-      require("packer").loader(plugin)
-   end, 0)
-end
-
 -- remove plugins defined in chadrc
 M.remove_default_plugins = function(plugins)
    local removals = M.load_config().plugins.remove or {}