[feat] nvim: highlight lua codesnippets

Adding a comment with the language will automatically highlight the
code:

```nix
luaCode = /*lua*/ ''
    function() return "look ma I'm highlighted!" end
'';
```

(May only work using treesitter)

nvim/augroups.nix

@@ -12,7 +12,12 @@ in {
         group = "highlightOnYank";
         event = "TextYankPost";
         pattern = "*";
-        callback = mkRaw ''
+        callback =
+          mkRaw
+          /*
+          lua
+          */
+          ''
             function()
               vim.highlight.on_yank {
                 higroup = (
@@ -27,7 +32,12 @@ in {
         group = "restoreCursorPosition";
         event = "BufReadPost";
         pattern = "*";
-        callback = mkRaw ''
+        callback =
+          mkRaw
+          /*
+          lua
+          */
+          ''
             function()
               if vim.fn.line '\'"' > 0 and vim.fn.line '\'"' <= vim.fn.line '$' then
                 vim.cmd [[execute "normal! g'\""]]
@@ -42,7 +52,11 @@ in {
         callback = let
           opts = "noremap = true, buffer = bufnr";
         in
-          mkRaw ''
+          mkRaw
+          /*
+          lua
+          */
+          ''
             function(opts)
               local bufnr = opts.buf
               local client = vim.lsp.get_client_by_id(opts.data.client_id)

nvim/mappings.nix

@@ -51,99 +51,180 @@ in {
     {
       mode = "n";
       key = "<leader>dj";
-      action = mkRaw "vim.diagnostic.goto_next";
+      action =
+        mkRaw
+        # lua
+        ''
+          vim.diagnostic.goto_next
+        '';
       options.desc = "Diagnostics next [J]";
     }
     {
       mode = "n";
       key = "<leader>dk";
-      action = mkRaw "vim.diagnostic.goto_prev";
+      action =
+        mkRaw
+        # lua
+        ''
+          vim.diagnostic.goto_prev
+        '';
       options.desc = "Diagnostics previous [K]";
     }
     {
       mode = "n";
       key = "<leader>xx";
-      action = mkRaw "require('trouble').toggle";
+      action =
+        mkRaw
+        # lua
+        ''
+          require('trouble').toggle
+        '';
       options.desc = "Toggle trouble";
     }
     {
       mode = "n";
       key = "<leader>xw";
-      action = mkRaw "function() require('trouble').toggle('workspace_diagnostics') end";
+      action =
+        mkRaw
+        # lua
+        ''
+          function() require('trouble').toggle('workspace_diagnostics') end
+        '';
       options.desc = "Toggle Workspace trouble";
     }
     {
       mode = "n";
       key = "<leader>xd";
-      action = mkRaw "function() require('trouble').toggle('document_diagnostics') end";
+      action =
+        mkRaw
+        # lua
+        ''
+          function() require('trouble').toggle('document_diagnostics') end
+        '';
       options.desc = "Toggle Document trouble";
     }
     {
       mode = "n";
       key = "<leader>xq";
-      action = mkRaw "function() require('trouble').toggle('quickfix') end";
+      action =
+        mkRaw
+        # lua
+        ''
+          function() require('trouble').toggle('quickfix') end
+        '';
       options.desc = "Toggle Quickfix trouble";
     }
     {
       mode = "n";
       key = "<leader>xl";
-      action = mkRaw "function() require('trouble').toggle('loclist') end";
+      action =
+        mkRaw
+        # lua
+        ''
+          function() require('trouble').toggle('loclist') end
+        '';
       options.desc = "Toggle Loclist trouble";
     }
     {
       mode = "n";
       key = "gR";
-      action = mkRaw "function() require('trouble').toggle('lsp_references') end";
+      action =
+        mkRaw
+        # lua
+        ''
+          function() require('trouble').toggle('lsp_references') end
+        '';
       options.desc = "Toggle lsp References trouble";
     }
     # Telescope
     {
       mode = "n";
       key = "<leader>ff";
-      action = mkRaw "require('telescope.builtin').find_files";
+      action =
+        mkRaw
+        # lua
+        ''
+          require('telescope.builtin').find_files
+        '';
       options.desc = "Find Files";
     }
     {
       mode = "n";
       key = "<leader>fg";
-      action = mkRaw "require('telescope.builtin').live_grep";
+      action =
+        mkRaw
+        # lua
+        ''
+          require('telescope.builtin').live_grep
+        '';
       options.desc = "Find Grep";
     }
     {
       mode = "n";
       key = "<leader>fh";
-      action = mkRaw "require('telescope.builtin').help_tags";
+      action =
+        mkRaw
+        # lua
+        ''
+          require('telescope.builtin').help_tags
+        '';
       options.desc = "Find Help";
     }
     {
       mode = "n";
       key = "<leader>fb";
-      action = mkRaw "require('telescope.builtin').buffers";
+      action =
+        mkRaw
+        # lua
+        ''
+          require('telescope.builtin').buffers
+        '';
       options.desc = "Find Buffer";
     }
     {
       mode = "n";
       key = "<leader>fd";
-      action = mkRaw "require('telescope.builtin').diagnostics";
+      action =
+        mkRaw
+        # lua
+        ''
+          require('telescope.builtin').diagnostics
+        '';
       options.desc = "Find Diagnostics";
     }
     {
       mode = "n";
       key = "<leader>fq";
-      action = mkRaw "require('telescope.builtin').quickfix";
+      action =
+        mkRaw
+        # lua
+        ''
+          require('telescope.builtin').quickfix
+        '';
       options.desc = "Find Quickfix";
     }
     {
       mode = "n";
       key = "<leader>w";
-      action = mkRaw "require('conform').format";
+      action =
+        mkRaw
+        # lua
+        ''
+          require('conform').format
+        '';
       options.desc = "Format buffer";
     }
     # Nvim Silicon
     {
       mode = "v";
       key = "<leader>sc";
-      action = mkRaw "require('nvim-silicon').clip";
+      action =
+        mkRaw
+        # lua
+        ''
+          require('nvim-silicon').clip
+
+        '';
       options.desc = "Snap Code (to clipboard)";
     }
   ];

nvim/plugins.nix

@@ -15,14 +15,28 @@ in {
       enable = true;
       cmdline = {
         "/" = {
-          mapping = mkRaw "cmp.mapping.preset.cmdline()";
+          mapping =
+            mkRaw
+            /*
+            lua
+            */
+            ''
+              cmp.mapping.preset.cmdline()
+            '';
           sources = [
             {name = "rg";}
             {name = "buffer";}
           ];
         };
         ":" = {
-          mapping = mkRaw "cmp.mapping.preset.cmdline()";
+          mapping =
+            mkRaw
+            /*
+            lua
+            */
+            ''
+              cmp.mapping.preset.cmdline()
+            '';
           sources = [
             {name = "path";}
             {name = "cmdline";}
@@ -31,7 +45,13 @@ in {
       };
       settings = {
         # Snippets
-        snippet.expand = "function(args) require('luasnip').lsp_expand(args.body) end";
+        snippet.expand =
+          /*
+          lua
+          */
+          ''
+            function(args) require('luasnip').lsp_expand(args.body) end
+          '';
         # Completion Sources
         sources = [
           {
@@ -83,7 +103,12 @@ in {
             groupIndex = 1;
           }
         ];
-        mapping = mkRaw ''
+        mapping =
+          mkRaw
+          /*
+          lua
+          */
+          ''
             cmp.mapping.preset.insert({
               ["<C-n>"] = function(fallback)
                 if cmp.visible() then

nvim/standalone.nix

@@ -55,7 +55,9 @@
       pkgs.unstable.typos
       pkgs.unstable.yamlfmt
     ];
-    extraConfigLuaPre = ''
+    extraConfigLuaPre =
+      # lua
+      ''
         -- Lua Pre Config
         if vim.fn.has 'termguicolors' then
           -- Enable RGB colors
@@ -71,7 +73,9 @@
         end
         -- END: Lua Pre Config
       '';
-    extraConfigLua = ''
+    extraConfigLua =
+      # lua
+      ''
         -- Lua Config
         require("nvim-silicon").setup {
           theme = "gruvbox-dark",