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<h3>
Holger Levsen pushed to branch master
at <a href="https://salsa.debian.org/reproducible-builds/reproducible-website">Reproducible Builds / reproducible-website</a>
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<h4>
Commits:
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<strong><a href="https://salsa.debian.org/reproducible-builds/reproducible-website/-/commit/3764949f50fe3d8f557de2b4d26e740f55760c31">3764949f</a></strong>
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<span>by Holger Levsen</span>
<i>at 2022-03-30T01:42:39+02:00</i>
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<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">explain SOURCE_DATE_EPOCH on /docs/source_date_epoch
Signed-off-by: Holger Levsen <holger@layer-acht.org>
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<h4>1 changed file:</h4>
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<a href="#6f55eb86fc656477f1ff0de17d46587995c33084">
_docs/source-date-epoch.md
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<h4>Changes:</h4>
<li id="6f55eb86fc656477f1ff0de17d46587995c33084">
<a href="https://salsa.debian.org/reproducible-builds/reproducible-website/-/commit/3764949f50fe3d8f557de2b4d26e740f55760c31#6f55eb86fc656477f1ff0de17d46587995c33084"><strong>_docs/source-date-epoch.md</strong></a>
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<td class="line_content match" style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -4,8 +4,11 @@ layout: docs</td>
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<td class="line_content" style="padding-left: 0.5em; padding-right: 0.5em;"><pre style="margin: 0;"> <span id="LC4" class="line" lang="markdown"><span class="na" style="color: #008080;">permalink</span><span class="pi">:</span> <span class="s" style="color: #d14;">/docs/source-date-epoch/</span></span>
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<td class="line_content" style="padding-left: 0.5em; padding-right: 0.5em;"><pre style="margin: 0;"> <span id="LC5" class="line" lang="markdown"><span class="nn" style="color: #555;">---</span></span>
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<td class="line_content" style="padding-left: 0.5em; padding-right: 0.5em;"><pre style="margin: 0;"> <span id="LC6" class="line" lang="markdown"></span>
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<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0"><pre style="margin: 0;">+<span id="LC7" class="line" lang="markdown"></span>
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<td class="line_content" style="padding-left: 0.5em; padding-right: 0.5em;"><pre style="margin: 0;"> <span id="LC8" class="line" lang="markdown"><span class="sb" style="color: #d14;">`SOURCE_DATE_EPOCH`</span> is a <span class="p">[</span><span class="nv" style="color: #008080;">standardised environment variable</span><span class="p">](</span><span class="sx" style="color: #d14;">https://reproducible-builds.org/specs/source-date-epoch/</span><span class="p">)</span> that distributions can set centrally and have build tools consume this in order to produce reproducible output.</span>
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<td class="line_content" style="padding-left: 0.5em; padding-right: 0.5em;"><pre style="margin: 0;"> <span id="LC9" class="line" lang="markdown"></span>
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<td class="new_line diff-line-num new" data-linenumber="10" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0"><pre style="margin: 0;">+<span id="LC10" class="line" lang="markdown">In practice <span class="sb" style="color: #d14;">`SOURCE_DATE_EPOCH`</span> specifies the last modification of something, usually the source code, (measured) in seconds since the unix epoch, which is January 1st 1970, 00:00:00 UTC.</span>
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<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0"><pre style="margin: 0;">+<span id="LC11" class="line" lang="markdown"></span>
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<td class="line_content" style="padding-left: 0.5em; padding-right: 0.5em;"><pre style="margin: 0;"> <span id="LC12" class="line" lang="markdown">Before implementing this, you should scan through <span class="p">[</span><span class="nv" style="color: #008080;">our checklist</span><span class="p">](</span><span class="sx" style="color: #d14;">https://wiki.debian.org/ReproducibleBuilds/StandardEnvironmentVariables#Checklist</span><span class="p">)</span> to see if you can avoid implementing it.</span>
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<td class="line_content" style="padding-left: 0.5em; padding-right: 0.5em;"><pre style="margin: 0;"> <span id="LC13" class="line" lang="markdown"></span>
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<td class="line_content" style="padding-left: 0.5em; padding-right: 0.5em;"><pre style="margin: 0;"> <span id="LC14" class="line" lang="markdown">If you find that it's ideal for your use-case, please feel free to jump straight to our <span class="gs" style="font-weight: 600;">**[published specification](https://reproducible-builds.org/specs/source-date-epoch/)**</span>.</span>
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