Make ruby layer load dap layer when lsp is used as backend

Before the ruby layer was only requiring standalone lsp layer,
however with the latest changes dap support has been added
therefore I have updated the layer file to require the full
dap layer instead which in turn requires the lsp layer.

layers/+lang/ruby/layers.el

@@ -11,4 +11,4 @@
 
 (when (and (boundp 'ruby-backend)
            (eq ruby-backend 'lsp))
-  (configuration-layer/declare-layer-dependencies '(lsp)))
+  (configuration-layer/declare-layer-dependencies '(dap)))

layers/+lang/ruby/packages.el

@@ -9,36 +9,36 @@
 ;;
 ;;; License: GPLv3
 
-(setq ruby-packages
-      '(
-        bundler
-        chruby
-        company
-        counsel-gtags
-        dap-mode
-        (enh-ruby-mode :toggle ruby-enable-enh-ruby-mode)
-        evil-matchit
-        flycheck
-        ggtags
-        helm-gtags
-        minitest
-        org
-        popwin
-        rake
-        rbenv
-        robe
-        rspec-mode
-        rubocop
-        rubocopfmt
-        ruby-hash-syntax
-        (ruby-mode :location built-in :toggle (not ruby-enable-enh-ruby-mode))
-        ruby-refactor
-        ruby-test-mode
-        ruby-tools
-        rvm
-        seeing-is-believing
-        smartparens
-        ))
+(defconst ruby-packages
+  '(
+    bundler
+    chruby
+    company
+    counsel-gtags
+    dap-mode
+    (enh-ruby-mode :toggle ruby-enable-enh-ruby-mode)
+    evil-matchit
+    flycheck
+    ggtags
+    helm-gtags
+    minitest
+    org
+    popwin
+    rake
+    rbenv
+    robe
+    rspec-mode
+    rubocop
+    rubocopfmt
+    ruby-hash-syntax
+    (ruby-mode :location built-in :toggle (not ruby-enable-enh-ruby-mode))
+    ruby-refactor
+    ruby-test-mode
+    ruby-tools
+    rvm
+    seeing-is-believing
+    smartparens
+    ))
 
 (defun ruby/init-bundler ()
   (use-package bundler
@@ -179,8 +179,8 @@
       (dolist (hook '(ruby-mode-hook enh-ruby-mode-hook))
         (add-hook hook 'robe-mode))
       (spacemacs/add-to-hooks 'robe-jump
-                       '(spacemacs-jump-handlers-ruby-mode
-                         spacemacs-jump-handlers-enh-ruby-mode)))
+                              '(spacemacs-jump-handlers-ruby-mode
+                                spacemacs-jump-handlers-enh-ruby-mode)))
     :config
     (progn
       (spacemacs|hide-lighter robe-mode)