Different layout for browsing public area and public project page while not logged-in

app/views/layouts/_public_head_panel.html.haml

+%header.navbar.navbar-static-top.navbar-gitlab
+  .navbar-inner
+    .container
+      %div.app_logo
+        %span.separator
+        = link_to public_root_path, class: "home" do
+          %h1 GITLAB
+        %span.separator
+      %h1.project_name
+        - if @project
+          = project_title(@project)
+        - else
+          Public Projects
+
+      %ul.nav
+        %li
+          %a
+            %div.hide.turbolink-spinner
+              %i.icon-refresh.icon-spin
+              Loading...
+        %li
+          = link_to "Sign in", new_session_path(:user), class: 'btn btn-sign-in'

app/views/layouts/public.html.haml

@@ -5,35 +5,7 @@
     - if current_user
       = render "layouts/head_panel", title: "Public Projects"
     - else
-      %header.navbar.navbar-static-top.navbar-gitlab
-        .navbar-inner
-          .container
-            %div.app_logo
-              %span.separator
-              = link_to public_root_path, class: "home" do
-                %h1 GITLAB
-              %span.separator
-            %h1.project_name
-              - if @project
-                = project_title(@project)
-              - else
-                Public Projects
-
-            %ul.nav
-              %li
-                %a
-                  %div.hide.turbolink-spinner
-                    %i.icon-refresh.icon-spin
-                    Loading...
-              %li
-                = link_to "Sign in", new_session_path(:user), class: 'btn btn-sign-in'
-
-    - if @project
-      %nav.main-nav
-        .container= render 'layouts/nav/project'
+      = render "layouts/public_head_panel"
 
-      .container
-        .content= yield
-    - else
     .container.navless-container
       .content= yield

app/views/layouts/public_projects.html.haml

+!!! 5
+%html{ lang: "en"}
+  = render "layouts/head", title: @project.name_with_namespace
+  %body{class: "ui_mars application", :'data-page' => body_data_page}
+    = render "layouts/public_head_panel"
+    %nav.main-nav
+      .container= render 'layouts/nav/project'
+    .container
+      .content= yield