GitHub Actions matrix strategy with fail-fast disabled

<p>CI pipeline uses matrix builds for multiple Python versions but stops all jobs when one fails. Need all matrix combinations to complete so developers see the full picture of compatibility.</p>

<p>Disable fail-fast in the matrix strategy:</p> <div class="highlight"><pre><span></span><code><span class="nt">jobs</span><span class="p">:</span> <span class="w"> </span><span class="nt">test</span><span class="p">:</span> <span class="w"> </span><span class="nt">strategy</span><span class="p">:</span> <span class="w"> </span><span class="nt">fail-fast</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">false</span> <span class="w"> </span><span class="nt">matrix</span><span class="p">:</span> <span class="w"> </span><span class="nt">python-version</span><span class="p">:</span><span class="w"> </span><span class="p p-Indicator">[</span><span class="s">'3.10'</span><span class="p p-Indicator">,</span><span class="w"> </span><span class="s">'3.11'</span><span class="p p-Indicator">,</span><span class="w"> </span><span class="s">'3.12'</span><span class="p p-Indicator">]</span> <span class="w"> </span><span class="nt">os</span><span class="p">:</span><span class="w"> </span><span class="p p-Indicator">[</span><span class="nv">ubuntu-latest</span><span class="p p-Indicator">,</span><span class="w"> </span><span class="nv">macos-latest</span><span class="p p-Indicator">]</span> <span class="w"> </span><span class="nt">runs-on</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">${{ matrix.os }}</span> <span class="w"> </span><span class="nt">steps</span><span class="p">:</span> <span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="nt">uses</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">actions/setup-python@v5</span> <span class="w"> </span><span class="nt">with</span><span class="p">:</span> <span class="w"> </span><span class="nt">python-version</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">${{ matrix.python-version }}</span> <span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="nt">run</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">pytest --tb=short</span> </code></pre></div> <p>With <code>fail-fast: false</code>, all combinations run to completion regardless of individual failures.</p>