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Pinning Fossil Inputs | Nixtamal
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<h1 itemprop="headline" class="title">
Pinning Fossil Inputs
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<p>
<a class="reference external" href="https://www.fossil-scm.org/"><cite>Fossil</cite></a> is a snapshot-based software configuration management, bug tracking system, & wiki software server all rolled into one self-hostable unit.
At the time of writing, Nix flakes does not & cannot support Fossil input pinning requiring an input pinner like <a class="reference external" href="https://nixtamal.toast.al/"><cite>Nixtamal</cite></a> to automate it.
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<section id="how-to-pin-a-fossil-repository-with-nix-nixtamal">
<h2>
How to pin a Fossil repository with Nix + Nixtamal
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What better way to test our Fossil support than download Fossil itself?
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<p class="rubric">
Latest check-in on trunk
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<pre class="code kdl literal-block"><span class="c1">// manifest.kdl
</span><span class="nl">inputs</span><span class="w"> </span><span class="o">{</span><span class="nl">
</span><span class="nl"> fossil-src</span><span class="w"> </span><span class="o">{</span><span class="nl">
</span><span class="nl"> fossil</span><span class="w"> </span><span class="o">{</span><span class="nl">
</span><span class="nl"> repository</span><span class="w"> </span><span class="s">"https://fossil-scm.org/home"</span><span class="w">
</span><span class="nl"> branch</span><span class="w"> </span><span class="s">trunk</span><span class="w">
</span><span class="w"> </span><span class="o">}</span><span class="w">
</span><span class="w"> </span><span class="c1">// Since this is just a canary, we can kinda use cURL⦠it seems
</span><span class="w"> </span><span class="c1">// Fossil is trying to really put up guards/honeypots, but we are
</span><span class="w"> </span><span class="c1">// actually trying to save them unnecessary fetches. :( In this case
</span><span class="w"> </span><span class="c1">// we use htmlq to echo an entire table row as the fresh value since
</span><span class="w"> </span><span class="c1">// without putting in a fake user agent & looking for + trimming
</span><span class="w"> </span><span class="c1">// data-href we canât get the real, full check-in ID. The JSON API
</span><span class="w"> </span><span class="c1">// seems to be disabled as well.
</span><span class="nl"> fresh-cmd</span><span class="w"> </span><span class="o">{</span><span class="nl">
</span><span class="nl"> $</span><span class="w"> </span><span class="s">curl</span><span class="w"> </span><span class="s">-sL</span><span class="w"> </span><span class="s">"https://fossil-scm.org/home/info/trunk"</span><span class="w">
</span><span class="nl"> |</span><span class="w"> </span><span class="s">htmlq</span><span class="w"> </span><span class="s">-t</span><span class="w"> </span><span class="s">-w</span><span class="w"> </span><span class="s">"table.timelineTable tr.timelineDateRow:first-of-type + tr"</span><span class="w">
</span><span class="w"> </span><span class="o">}</span><span class="w">
</span><span class="w"> </span><span class="o">}</span><span class="w">
</span><span class="o">}</span></pre>
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