<ul dir="auto">
<li>Adds some commentary to build files</li>
<li>Pins macOS builds to <code>macos-10.15</code> because that has been our build platform for the past weeks; <code>macos-11</code> is the new default on GHA <code>macos-latest</code></li>
<li>Specialize filters for <code>building/**</code> in our GHA <code>.yml</code> files to reduce the number of actually needed builds</li>
</ul>

<hr>

<h4>You can view, comment on, or merge this pull request online at:</h4>
<p>  <a href='https://github.com/OpenSmalltalk/opensmalltalk-vm/pull/609'>https://github.com/OpenSmalltalk/opensmalltalk-vm/pull/609</a></p>

<h4>Commit Summary</h4>
<ul>
  <li><a href="https://github.com/OpenSmalltalk/opensmalltalk-vm/pull/609/commits/a82c72f884d9a5d893e92d779eb63700820fc560" class="commit-link">a82c72f</a>  Improves path matching to avoid unnecessary builds. Pin mac builds to macos-10.15 for now until requested otherwise; "macos-latest" became macos-11 only recently. [ci skip]</li>
  <li><a href="https://github.com/OpenSmalltalk/opensmalltalk-vm/pull/609/commits/7c761e7cf027bbc2cadc2ce7da6c163fa072074d" class="commit-link">7c761e7</a>  Add build job for macos64ARMv8.</li>
</ul>

<h4 style="display: inline-block">File Changes </h4> <p style="display: inline-block">(<a href="https://github.com/OpenSmalltalk/opensmalltalk-vm/pull/609/files">6 files</a>)</p>
<ul>
  <li>
    <strong>M</strong>
    <a href="https://github.com/OpenSmalltalk/opensmalltalk-vm/pull/609/files#diff-49daac3e9bff56da6faed5a0dc650536e5eedcde3ab2c5e9b9fa96ad053210eb">.github/workflows/extra-arm.yml</a>
    (2)
  </li>
  <li>
    <strong>M</strong>
    <a href="https://github.com/OpenSmalltalk/opensmalltalk-vm/pull/609/files#diff-19d7df14a6f8885d622eaded996284d60a0a469aadd397b2f6a39833aaaae248">.github/workflows/extra.yml</a>
    (4)
  </li>
  <li>
    <strong>M</strong>
    <a href="https://github.com/OpenSmalltalk/opensmalltalk-vm/pull/609/files#diff-ba1cd3a525e7f9e9fb68d3ce8c4cffbb627f2f62b4c958fe124f6b9609e10519">.github/workflows/linux-arm.yml</a>
    (10)
  </li>
  <li>
    <strong>M</strong>
    <a href="https://github.com/OpenSmalltalk/opensmalltalk-vm/pull/609/files#diff-21364b2e6fae1f2875cee1ab3daefb0685403687eaf8bc32b5c6eacda351c9d3">.github/workflows/linux.yml</a>
    (10)
  </li>
  <li>
    <strong>A</strong>
    <a href="https://github.com/OpenSmalltalk/opensmalltalk-vm/pull/609/files#diff-48c9b68f9499db7b9461975c135cebcf42678dd15619b03acdca4f5556746756">.github/workflows/macos-arm.yml</a>
    (131)
  </li>
  <li>
    <strong>M</strong>
    <a href="https://github.com/OpenSmalltalk/opensmalltalk-vm/pull/609/files#diff-7b74d73de878e0e53f6768bbf3a3d4b50c3c6f1f16f9b64518690028b8206b1c">.github/workflows/macos.yml</a>
    (6)
  </li>
</ul>

<h4>Patch Links:</h4>
<ul>
  <li><a href='https://github.com/OpenSmalltalk/opensmalltalk-vm/pull/609.patch'>https://github.com/OpenSmalltalk/opensmalltalk-vm/pull/609.patch</a></li>
  <li><a href='https://github.com/OpenSmalltalk/opensmalltalk-vm/pull/609.diff'>https://github.com/OpenSmalltalk/opensmalltalk-vm/pull/609.diff</a></li>
</ul>

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