diff --git a/modules/arduino/default.nix b/modules/arduino/default.nix
new file mode 100644
index 0000000..926a0f6
--- /dev/null
+++ b/modules/arduino/default.nix
@@ -0,0 +1,23 @@
+{ lib, config, pkgs, ... }:
+with lib;
+let
+  psCfg = config.pub-solar;
+  cfg = config.pub-solar.devops;
+in
+{
+  options.pub-solar.arduino = {
+    enable = mkEnableOption "Life with home automation";
+  };
+  config = mkIf cfg.enable {
+    users.users = pkgs.lib.setAttrByPath [ psCfg.user.name ] {
+      extraGroups = [ "dialout" ];
+    };
+
+    home-manager = with pkgs; pkgs.lib.setAttrByPath [ "users" psCfg.user.name ] {
+      home.packages = [
+        arduino
+        arduino-cli
+      ];
+    };
+  };
+}
diff --git a/modules/terminal-life/nvim/lsp.vim b/modules/terminal-life/nvim/lsp.vim
index bf7f032..97e9e21 100644
--- a/modules/terminal-life/nvim/lsp.vim
+++ b/modules/terminal-life/nvim/lsp.vim
@@ -79,6 +79,8 @@ lua <<EOF
   -- vscode HTML lsp needs this https://github.com/neovim/nvim-lspconfig/blob/master/doc/server_configurations.md#html
   capabilities.textDocument.completion.completionItem.snippetSupport = true
 
+  local use_denols_for_typescript = not(os.getenv('NVIM_USE_DENOLS') == nil)
+
   for lsp_key, lsp_settings in pairs({
         'bashls', ------------------------------- Bash
         'ccls', --------------------------------- C / C++ / Objective-C
@@ -131,7 +133,13 @@ lua <<EOF
         ['terraformls'] = { --------------------- Terraform
             ['filetypes'] = { 'terraform', 'hcl', 'tf' }
         },
-        'tsserver', ----------------------------- Typescript / JavaScript
+
+        -- The TS/JS server is chosen depending on an environment variable,
+        -- since denols is nicer for Deno based projects
+        ------------------------ Deno TS/JS
+        ------------------------------------ Typescript / JavaScript
+        (use_denols_for_typescript and 'denols' or 'tsserver'),
+
         'vuels', -------------------------------- Vue
         'svelte', ------------------------------- Svelte
         ['yamlls'] = { -------------------------- YAML
@@ -215,21 +223,26 @@ lua <<EOF
     },
   }
 
--- Configure diagnostics
-vim.diagnostic.config({
-  virtual_text = false,
-  signs = true,
-  underline = true,
-  update_in_insert = false,
-  severity_sort = false,
-})
+  -- https://github.com/neovim/nvim-lspconfig/blob/master/doc/server_configurations.md#denols
+  vim.g.markdown_fenced_languages = {
+    "ts=typescript"
+  }
 
--- Change diagnostic symbols in the sign column (gutter)
-local signs = { Error = " ", Warn = " ", Hint = " ", Info = " " }
-for type, icon in pairs(signs) do
-  local hl = "DiagnosticSign" .. type
-  vim.fn.sign_define(hl, { text = icon, texthl = hl, numhl = hl })
-end
+  -- Configure diagnostics
+  vim.diagnostic.config({
+    virtual_text = false,
+    signs = true,
+    underline = true,
+    update_in_insert = false,
+    severity_sort = false,
+  })
+
+  -- Change diagnostic symbols in the sign column (gutter)
+  local signs = { Error = " ", Warn = " ", Hint = " ", Info = " " }
+  for type, icon in pairs(signs) do
+    local hl = "DiagnosticSign" .. type
+    vim.fn.sign_define(hl, { text = icon, texthl = hl, numhl = hl })
+  end
 EOF
 
 " have a fixed column for the diagnostics to appear in
diff --git a/modules/x-os/boot.nix b/modules/x-os/boot.nix
index 0633bec..0ee29b8 100644
--- a/modules/x-os/boot.nix
+++ b/modules/x-os/boot.nix
@@ -9,6 +9,11 @@ in
     default = false;
     description = "Feature flag for iso builds";
   };
+  options.pub-solar.x-os.disk-encryption-active = mkOption {
+    type = types.bool;
+    default = true;
+    description = "Whether it should be assumed that there is a cryptroot device";
+  };
   config = {
     # Enable plymouth for better experience of booting
     boot.plymouth.enable = true;
@@ -16,7 +21,7 @@ in
     # Mount / luks device in initrd
     # Allow fstrim to work on it.
     # The ! makes this enabled by default
-    boot.initrd = mkIf (!cfg.iso-options.enable) {
+    boot.initrd = mkIf (!cfg.iso-options.enable && cfg.disk-encryption-active) {
       luks.devices."cryptroot" = {
         allowDiscards = true;
       };
diff --git a/overlays/overrides.nix b/overlays/overrides.nix
index 8c016e1..df75736 100644
--- a/overlays/overrides.nix
+++ b/overlays/overrides.nix
@@ -15,6 +15,8 @@ channels: final: prev: {
     deploy-rs
 
     tdesktop
+    arduino
+    arduino-cli
     ;