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<a href="#function-library-lib.sources.commitIdFromGitRepo" class="md-nav__link">
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lib.sources.commitIdFromGitRepo
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<h1 id="sec-functions-library-sources">lib.sources: source filtering functions</h1>
<p>Functions for copying sources to the Nix store.</p>
<h2 id="function-library-lib.sources.commitIdFromGitRepo"><code>lib.sources.commitIdFromGitRepo</code></h2>
<p>Get the commit id of a git repo.</p>
<p><code>path</code></p>
<p>: Function argument</p>
<div class="admonition example">
<p class="admonition-title">Example</p>
<h1 id="libsourcescommitidfromgitrepo-usage-example"><code>lib.sources.commitIdFromGitRepo</code> usage example</h1>
</div>
<div class="highlight"><pre><span></span><code>commitIdFromGitRepo <span class="l">&lt;nixpkgs/.git&gt;</span>
</code></pre></div>
<p>Located at <a href="https://github.com/NixOS/nixpkgs/blob/master/lib/sources.nix#L273">lib/sources.nix:273</a> in <code>&lt;nixpkgs&gt;</code>.</p>
<h2 id="function-library-lib.sources.cleanSource"><code>lib.sources.cleanSource</code></h2>
<p>Filters a source tree removing version control files and directories using cleanSourceFilter.</p>
<p><code>src</code></p>
<p>: Function argument</p>
<div class="admonition example">
<p class="admonition-title">Example</p>
<h1 id="libsourcescleansource-usage-example"><code>lib.sources.cleanSource</code> usage example</h1>
</div>
<div class="highlight"><pre><span></span><code>cleanSource <span class="l">./.</span>
</code></pre></div>
<p>Located at <a href="https://github.com/NixOS/nixpkgs/blob/master/lib/sources.nix#L275">lib/sources.nix:275</a> in <code>&lt;nixpkgs&gt;</code>.</p>
<h2 id="function-library-lib.sources.cleanSourceWith"><code>lib.sources.cleanSourceWith</code></h2>
<p>Like <code>builtins.filterSource</code>, except it will compose with itself,
allowing you to chain multiple calls together without any
intermediate copies being put in the nix store.</p>
<p>structured function argument</p>
<p>: <code>src</code></p>
<p>: A path or cleanSourceWith result to filter and/or rename.</p>
<p><code>filter</code></p>
<p>: Optional with default value: constant true (include everything) The function will be combined with the &amp;&amp; operator such that src.filter is called lazily. For implementing a filter, see https://nixos.org/nix/manual/#builtin-filterSource Type: A function (path -&gt; type -&gt; bool)</p>
<p><code>name</code></p>
<p>: Optional name to use as part of the store path. This defaults to <code>src.name</code> or otherwise <code>"source"</code>.</p>
<div class="admonition example">
<p class="admonition-title">Example</p>
<h1 id="libsourcescleansourcewith-usage-example"><code>lib.sources.cleanSourceWith</code> usage example</h1>
</div>
<div class="highlight"><pre><span></span><code>lib<span class="o">.</span>cleanSourceWith <span class="p">{</span>
<span class="ss">filter</span> <span class="o">=</span> f<span class="p">;</span>
<span class="ss">src</span> <span class="o">=</span> lib<span class="o">.</span>cleanSourceWith <span class="p">{</span>
<span class="ss">filter</span> <span class="o">=</span> g<span class="p">;</span>
<span class="ss">src</span> <span class="o">=</span> <span class="l">./.</span><span class="p">;</span>
<span class="p">};</span>
<span class="p">}</span>
<span class="c1"># Succeeds!</span>
<span class="nb">builtins</span><span class="o">.</span>filterSource f <span class="p">(</span><span class="nb">builtins</span><span class="o">.</span>filterSource g <span class="l">./.</span><span class="p">)</span>
<span class="c1"># Fails!</span>
</code></pre></div>
<p>Located at <a href="https://github.com/NixOS/nixpkgs/blob/master/lib/sources.nix#L276">lib/sources.nix:276</a> in <code>&lt;nixpkgs&gt;</code>.</p>
<h2 id="function-library-lib.sources.cleanSourceFilter"><code>lib.sources.cleanSourceFilter</code></h2>
<p>A basic filter for <code>cleanSourceWith</code> that removes
directories of version control system, backup files (*~)
and some generated files.</p>
<p><code>name</code></p>
<p>: Function argument</p>
<p><code>type</code></p>
<p>: Function argument</p>
<p>Located at <a href="https://github.com/NixOS/nixpkgs/blob/master/lib/sources.nix#L277">lib/sources.nix:277</a> in <code>&lt;nixpkgs&gt;</code>.</p>
<h2 id="function-library-lib.sources.sourceByRegex"><code>lib.sources.sourceByRegex</code></h2>
<p>Filter sources by a list of regular expressions.</p>
<p><code>src</code></p>
<p>: Function argument</p>
<p><code>regexes</code></p>
<p>: Function argument</p>
<div class="admonition example">
<p class="admonition-title">Example</p>
<h1 id="libsourcessourcebyregex-usage-example"><code>lib.sources.sourceByRegex</code> usage example</h1>
</div>
<div class="highlight"><pre><span></span><code><span class="ss">src</span> <span class="o">=</span> sourceByRegex <span class="l">./my-subproject</span> <span class="p">[</span><span class="s2">&quot;.*\.py$&quot;</span> <span class="s2">&quot;^database.sql$&quot;</span><span class="p">]</span>
</code></pre></div>
<p>Located at <a href="https://github.com/NixOS/nixpkgs/blob/master/lib/sources.nix#L281">lib/sources.nix:281</a> in <code>&lt;nixpkgs&gt;</code>.</p>
<h2 id="function-library-lib.sources.sourceFilesBySuffices"><code>lib.sources.sourceFilesBySuffices</code></h2>
<p><strong>Type</strong>: <code>sourceLike -&gt; [String] -&gt; Source</code></p>
<p>Get all files ending with the specified suffices from the given
source directory or its descendants, omitting files that do not match
any suffix. The result of the example below will include files like
<code>./dir/module.c</code> and <code>./dir/subdir/doc.xml</code> if present.</p>
<p><code>src</code></p>
<p>: Path or source containing the files to be returned</p>
<p><code>exts</code></p>
<p>: A list of file suffix strings</p>
<div class="admonition example">
<p class="admonition-title">Example</p>
<h1 id="libsourcessourcefilesbysuffices-usage-example"><code>lib.sources.sourceFilesBySuffices</code> usage example</h1>
</div>
<div class="highlight"><pre><span></span><code>sourceFilesBySuffices <span class="l">./.</span> <span class="p">[</span> <span class="s2">&quot;.xml&quot;</span> <span class="s2">&quot;.c&quot;</span> <span class="p">]</span>
</code></pre></div>
<p>Located at <a href="https://github.com/NixOS/nixpkgs/blob/master/lib/sources.nix#L282">lib/sources.nix:282</a> in <code>&lt;nixpkgs&gt;</code>.</p>
<h2 id="function-library-lib.sources.trace"><code>lib.sources.trace</code></h2>
<p><strong>Type</strong>: <code>sources.trace :: sourceLike -&gt; Source</code></p>
<p>Add logging to a source, for troubleshooting the filtering behavior.</p>
<p><code>src</code></p>
<p>: Source to debug. The returned source will behave like this source, but also log its filter invocations.</p>
<p>Located at <a href="https://github.com/NixOS/nixpkgs/blob/master/lib/sources.nix#L284">lib/sources.nix:284</a> in <code>&lt;nixpkgs&gt;</code>.</p>
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