title: Missing php8.1-curl package
body: <p>I'm trying to install the <code>php8.1-curl</code> package on my system - <code>Ubuntu 21.04</code>. I've added the Ondřej Surý's repository (<code>add-apt-repository ppa:ondrej/php</code>), performed <code>apt update</code> and I'm able to install <code>php8.1</code> and many other extensions (e.g. <code>php8.1-zip</code>) via <code>apt install php8.1...</code>, but not <code>php8.1-curl</code> for some reason.</p>
  <pre><code>&gt; sudo apt install php8.1-curl
  ...
  E: Unable to locate package php8.1-curl
  E: Couldn't find any package by glob 'php8.1-curl'
  </code></pre>
  <p>How should I go about troubleshooting this issue? Where can I look for the package and why it's missing on my system?</p>