terraform/website/layouts/registry.erb

<% wrap_layout :inner do %>
  <% content_for :sidebar do %>
    <h4><a href="/docs/registry/index.html">Terraform Registry</a></h4>

    <ul class="nav docs-sidenav">
      <li<%= sidebar_current("docs-registry-use") %>>
        <a href="/docs/registry/modules/use.html">Finding and Using Modules</a>
      </li>

      <li<%= sidebar_current("docs-registry-publish") %>>
        <a href="/docs/registry/modules/publish.html">Publishing Modules</a>
      </li>

      <li<%= sidebar_current("docs-registry-verified") %>>
        <a href="/docs/registry/modules/verified.html">Verified Modules</a>
      </li>

      <li<%= sidebar_current("docs-registry-private") %>>
        <a href="/docs/registry/private.html">Private Registries</a>
      </li>

      <li<%= sidebar_current("docs-registry-api") %>>
        <a href="/docs/registry/api.html">Registry API</a>
      </li>

      <li<%= sidebar_current("docs-registry-support") %>>
        <a href="/docs/registry/support.html">Registry Support</a>
      </li>
    </ul>

    <h4>Other Docs</h4>

    <ul class="nav docs-sidenav">
      <li>
        <a class="back" href="/downloads.html">Download Terraform</a>
      </li>

      <li>
        <a class="back" href="/intro/index.html">Introduction to Terraform</a>
      </li>

      <li>
        <a class="back" href="/docs/index.html">Terraform CLI</a>
      </li>

      <li>
        <a class="back" href="/docs/enterprise/index.html">Terraform Enterprise</a>
      </li>

      <li>
        <a class="back" href="/guides/index.html">Guides and Whitepapers</a>
      </li>

      <li>
        <a class="back" href="/docs/github-actions/index.html">Terraform GitHub Actions</a>
      </li>

      <li>
        <a class="back" href="/docs/extend/index.html">Extending Terraform</a>
      </li>
    </ul>
  <% end %>

  <%= yield %>
<% end %>