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Greetings, I am new to the GDAL discussion board and am just checking if this is the appropriate method for requesting a feature, such as VRT file support within a Zstd-compressed zip? </div>
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<span style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">Jordan Dauble</span></p>
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<span style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">SimBlocks LLC, Founder & CEO</span></p>
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<span style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">407-641-5218<br>
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<span style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">253 Plaza Dr., Ste C<br>
Oviedo, FL 32765</span></p>
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<span style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);"><a href="https://www.simblocks.io/" id="OWA89550365-fb1b-19ab-a606-f18aa96e6f7c" class="OWAAutoLink" style="margin-top: 0px; margin-bottom: 0px;">https://www.simblocks.io/</a></span></p>
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<span style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">Chair,
<a href="https://www.sisostandards.org/" id="OWAea016cef-bc76-9951-5111-112740cd2919" class="OWAAutoLink" title="https://www.sisostandards.org/" style="margin-top: 0px; margin-bottom: 0px;">
SISO CIGI PSG</a></span></p>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Jordan Dauble <Jordan.Dauble@SimBlocks.io><br>
<b>Sent:</b> Sunday, July 19, 2026 5:17 PM<br>
<b>To:</b> gdal-dev@lists.osgeo.org <gdal-dev@lists.osgeo.org><br>
<b>Subject:</b> VRT File Support Within a Zstd-Compressed Zip</font>
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Good afternoon, I would like to request that a new feature be added to GDAL. Our team has found that while both libzip and GDAL support Zstd compression, the support does not extend to loading vrt files within a Zstd-compressed zip. We have a use case where
the vsizip file handler is used on a Zstd-compressed zip, such as</div>
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<b>ogr2ogr outputTest.gpkg /vsizip/{<zip_filename>}/extent.geojson</b>.</div>
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We believe the following files would require modification to support this feature:</div>
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port/cpl_minizip_unzip.cpp</div>
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port/cpl_vsil_gzip.cpp</div>
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<span style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">Jordan Dauble</span></p>
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<span style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">SimBlocks LLC, Founder & CEO</span></p>
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<span style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">407-641-5218<br>
</span></p>
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<span style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">253 Plaza Dr., Ste C<br>
Oviedo, FL 32765</span></p>
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<span style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)"><a href="https://www.simblocks.io/" style="margin-top:0px; margin-bottom:0px">https://www.simblocks.io/</a></span></p>
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<span style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">Chair,
<a href="https://www.sisostandards.org/" title="https://www.sisostandards.org/" style="margin-top:0px; margin-bottom:0px">
SISO CIGI PSG</a></span></p>
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