diff --git a/nix/neovim-overlay.nix b/nix/neovim-overlay.nix
index 425d5be..d162e46 100644
--- a/nix/neovim-overlay.nix
+++ b/nix/neovim-overlay.nix
@@ -22,10 +22,17 @@ with final.pkgs.lib; let
   #   ...
   # }
   all-plugins = with pkgs.vimPlugins; [
+    nvim-dap # Debuggerhttps://github.com/mfussenegger/nvim-dap
+    nvim-dap-ui # Debugger UI https://github.com/rcarriga/nvim-dap-ui/
+
+    # Themes
+    tokyonight-nvim # https://github.com/folke/tokyonight.nvim
+
     # plugins from nixpkgs go in here.
     # https://search.nixos.org/packages?channel=unstable&from=0&size=50&sort=relevance&type=packages&query=vimPlugins
     nvim-treesitter.withAllGrammars
     luasnip # snippets | https://github.com/l3mon4d3/luasnip/
+
     # nvim-cmp (autocompletion) and extensions
     nvim-cmp # https://github.com/hrsh7th/nvim-cmp
     cmp_luasnip # snippets autocompletion extension for nvim-cmp | https://github.com/saadparwaiz1/cmp_luasnip/
@@ -37,26 +44,33 @@ with final.pkgs.lib; let
     cmp-nvim-lua # neovim lua API as completion source | https://github.com/hrsh7th/cmp-nvim-lua/
     cmp-cmdline # cmp command line suggestions
     cmp-cmdline-history # cmp command line history suggestions
+    copilot-lua # Github Copilot https://github.com/zbirenbaum/copilot.lua/
+    copilot-cmp # Add Copilot as a cmp source # https://github.com/zbirenbaum/copilot-cmp/
     # ^ nvim-cmp extensions
+
     # git integration plugins
     diffview-nvim # https://github.com/sindrets/diffview.nvim/
     neogit # https://github.com/TimUntersberger/neogit/
     gitsigns-nvim # https://github.com/lewis6991/gitsigns.nvim/
     vim-fugitive # https://github.com/tpope/vim-fugitive/
     # ^ git integration plugins
+
     # telescope and extensions
     telescope-nvim # https://github.com/nvim-telescope/telescope.nvim/
     telescope-fzy-native-nvim # https://github.com/nvim-telescope/telescope-fzy-native.nvim
     # telescope-smart-history-nvim # https://github.com/nvim-telescope/telescope-smart-history.nvim
     # ^ telescope and extensions
+
     # UI
     lualine-nvim # Status line | https://github.com/nvim-lualine/lualine.nvim/
     nvim-navic # Add LSP location to lualine | https://github.com/SmiteshP/nvim-navic
     statuscol-nvim # Status column | https://github.com/luukvbaal/statuscol.nvim/
     nvim-treesitter-context # nvim-treesitter-context
     # ^ UI
+
     # language support
     # ^ language support
+
     # navigation/editing enhancement plugins
     vim-unimpaired # predefined ] and [ navigation keymaps | https://github.com/tpope/vim-unimpaired/
     eyeliner-nvim # Highlights unique characters for f/F and t/T motions | https://github.com/jinh0/eyeliner.nvim
@@ -64,15 +78,18 @@ with final.pkgs.lib; let
     nvim-treesitter-textobjects # https://github.com/nvim-treesitter/nvim-treesitter-textobjects/
     nvim-ts-context-commentstring # https://github.com/joosepalviste/nvim-ts-context-commentstring/
     # ^ navigation/editing enhancement plugins
+
     # Useful utilities
     nvim-unception # Prevent nested neovim sessions | nvim-unception
     # ^ Useful utilities
+
     # libraries that other plugins depend on
     sqlite-lua
     plenary-nvim
     nvim-web-devicons
     vim-repeat
     # ^ libraries that other plugins depend on
+
     # bleeding-edge plugins from flake inputs
     # (mkNvimPlugin inputs.wf-nvim "wf.nvim") # (example) keymap hints | https://github.com/Cassin01/wf.nvim
     # ^ bleeding-edge plugins from flake inputs
@@ -81,8 +98,10 @@ with final.pkgs.lib; let
 
   extraPackages = with pkgs; [
     # language servers, etc.
+    clang-tools
     lua-language-server
     nil # nix LSP
+    nodejs_20
   ];
 in {
   # This is the neovim derivation
diff --git a/nvim/ftplugin/c.lua b/nvim/ftplugin/c.lua
new file mode 100644
index 0000000..bee7ef7
--- /dev/null
+++ b/nvim/ftplugin/c.lua
@@ -0,0 +1,18 @@
+-- Exit if the language server isn't available
+if vim.fn.executable('clangd') ~= 1 then
+  return
+end
+
+local root_files = {
+  'compile_commands.json',
+  '.vscode',
+  '.git',
+}
+
+vim.lsp.start {
+  name = 'clangd',
+  cmd = { 'clangd' },
+  root_dir = vim.fs.dirname(vim.fs.find(root_files, { upward = true })[1]),
+  capabilities = require('user.lsp').make_client_capabilities(),
+  -- capabilities = { offsetEncoding = "utf-8" },
+}
diff --git a/nvim/init.lua b/nvim/init.lua
index af08696..b2ebe26 100644
--- a/nvim/init.lua
+++ b/nvim/init.lua
@@ -99,6 +99,7 @@ vim.diagnostic.config {
 
 g.editorconfig = true
 
+cmd[[colorscheme tokyonight]]
 vim.opt.colorcolumn = '100'
 
 -- Native plugins
diff --git a/nvim/plugin/autocommands.lua b/nvim/plugin/autocommands.lua
index 7308aeb..754cf9a 100644
--- a/nvim/plugin/autocommands.lua
+++ b/nvim/plugin/autocommands.lua
@@ -63,7 +63,7 @@ vim.api.nvim_create_autocmd('LspAttach', {
     local client = vim.lsp.get_client_by_id(ev.data.client_id)
 
     -- Attach plugins
-    require('nvim-navic').attach(client, bufnr)
+    -- require('nvim-navic').attach(client, bufnr)
 
     vim.cmd.setlocal('signcolumn=yes')
     vim.bo[bufnr].bufhidden = 'hide'
diff --git a/nvim/plugin/completion.lua b/nvim/plugin/completion.lua
index 086b589..35abc58 100644
--- a/nvim/plugin/completion.lua
+++ b/nvim/plugin/completion.lua
@@ -67,7 +67,7 @@ cmp.setup {
         complete_with_source('path')
       end
     end, { 'i', 'c', 's' }),
-    ['<C-n>'] = cmp.mapping(function(fallback)
+    ['<C-j>'] = cmp.mapping(function(fallback)
       if cmp.visible() then
         cmp.select_next_item()
       -- expand_or_jumpable(): Jump outside the snippet region
@@ -80,7 +80,7 @@ cmp.setup {
         fallback()
       end
     end, { 'i', 'c', 's' }),
-    ['<C-p>'] = cmp.mapping(function(fallback)
+    ['<C-k>'] = cmp.mapping(function(fallback)
       if cmp.visible() then
         cmp.select_prev_item()
       elseif luasnip.jumpable(-1) then
@@ -103,6 +103,7 @@ cmp.setup {
   },
   sources = cmp.config.sources {
     -- The insertion order influences the priority of the sources
+    { name = "copilot", group_index = 2 },
     { name = 'nvim_lsp', keyword_length = 3 },
     { name = 'nvim_lsp_signature_help', keyword_length = 3 },
     { name = 'buffer' },
diff --git a/nvim/plugin/copilot.lua b/nvim/plugin/copilot.lua
new file mode 100644
index 0000000..75c3627
--- /dev/null
+++ b/nvim/plugin/copilot.lua
@@ -0,0 +1,15 @@
+if vim.g.did_load_copilot_plugin then
+  return
+end
+vim.g.did_load_copilot_plugin = true
+
+-- local configs = require('copilot')
+-- many plugins annoyingly require a call to a 'setup' function to be loaded,
+-- even with default configs
+
+require("copilot").setup({
+  suggestion = { enabled = false },
+  panel = { enabled = false },
+})
+
+
diff --git a/nvim/plugin/lualine.lua b/nvim/plugin/lualine.lua
index b5fbe02..88aec14 100644
--- a/nvim/plugin/lualine.lua
+++ b/nvim/plugin/lualine.lua
@@ -3,8 +3,8 @@ if vim.g.did_load_lualine_plugin then
 end
 vim.g.did_load_lualine_plugin = true
 
-local navic = require('nvim-navic')
-navic.setup {}
+-- local navic = require('nvim-navic')
+-- avic.setup {}
 
 ---Indicators for special modes,
 ---@return string status
@@ -32,7 +32,7 @@ require('lualine').setup {
   sections = {
     lualine_c = {
       -- nvim-navic
-      { navic.get_location, cond = navic.is_available },
+      -- { navic.get_location, cond = navic.is_available },
     },
     lualine_z = {
       -- (see above)
diff --git a/nvim/plugin/plugins.lua b/nvim/plugin/plugins.lua
index 69f39e3..3429409 100644
--- a/nvim/plugin/plugins.lua
+++ b/nvim/plugin/plugins.lua
@@ -6,5 +6,6 @@ vim.g.did_load_plugins_plugin = true
 -- many plugins annoyingly require a call to a 'setup' function to be loaded,
 -- even with default configs
 
+require("copilot_cmp").setup()
 require('nvim-surround').setup()
 require('which-key').setup()