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<p class="MsoNormal"><span style="font-size:11.0pt">Forwarding request to this address too, as it’s listed at:<br>
<br>
<a href="https://www.howtoinstall.co/en/ubuntu/xenial/zstd">https://www.howtoinstall.co/en/ubuntu/xenial/zstd</a><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="color:black">From: </span></b><span style="color:black">Yann Collet <cyan@fb.com><br>
<b>Date: </b>Wednesday, 13 September 2017 at 09:59<br>
<b>To: </b>"debian-med-packaging@lists.alioth.debian.org" <debian-med-packaging@lists.alioth.debian.org>, "spam@kdmurray.id.au" <spam@kdmurray.id.au>, "kdmfoss@gmail.com" <kdmfoss@gmail.com><br>
<b>Subject: </b>zstd package on Ubuntu LTS 16.04</span><span style="color:black;mso-fareast-language:EN-GB"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">Hi</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">I’m contacting you as your name / email address appear on the repository tracker</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">associated with the zstd package on Ubuntu.</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">(not sure if this is correct / relevant information btw)</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">I wanted to get in touch regarding, specifically, the version shipped with Ubuntu LTS 16.04 “Xenial”,</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">aka, current Ubuntu Long-Term-Support version.</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">Ubuntu “Xenial” ships zstd v0.5.1.</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">It’s an old, experimental, version, using a format incompatible with the official Zstandard format.</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">(It was officialized in v1.0.0, though technically, any version >= 0.8.0 is compatible).</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">That’s a problem because Ubuntu “Xenial” is not compatible with the rest of the world, all other repositories have already switched to versions > v1.0.</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt"><a href="https://repology.org/metapackage/zstd/versions">https://repology.org/metapackage/zstd/versions</a></span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">With Zstandard being planned for integration in Linux Kernel 4.14, supporting BtrFS, SquashFS and zRAM,</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">it’s an issue for userland tools, as they can’t rely on libzstd, since in some case (Ubuntu LTS and derivatives), the version is incorrect, so it generates incompatible data.</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">The solution would be for Ubuntu “Xenial” to update its zstd package.</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">The new version (current is v1.3.1) generates data using official documented format.</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">It’s also able to read data already compressed with v0.5.1, thanks to “legacy support” module (enabled by default), so it’s not disruptive for existing users.</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">Are you able to do something about it?</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">If not, do you know which contact point could be probed for such an action?</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">Regards</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">Yann Collet</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">Maintainer of Zstandard</span><o:p></o:p></p>
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