You're looking at StableBuild's Deleted PyPI mirror - where we index all deleted packages from the Python package registry.

xpresslibs
9.3.4

This version was deleted from PyPI around 2026-05-18. Installing fails with:
$ pip3 install xpresslibs==9.3.4 ERROR: Could not find a version that satisfies the requirement xpresslibs==9.3.4
View other deleted versions of xpresslibs

Install through StableBuild

You can install this package from StableBuild's PyPI snapshots from before the version was deleted:
pip3 install \ -i https://YOUR_API_KEY.pypimirror.stablebuild.com/2026-05-17/ \ xpresslibs==9.3.4
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Or, download files manually

And install manually via pip:
xpresslibs-9.3.4-cp38-abi3-macosx_10_13_x86_64.whl (43.4MB)
xpresslibs-9.3.4-cp38-abi3-macosx_11_0_arm64.whl (10.5MB)
xpresslibs-9.3.4-cp38-abi3-manylinux1_x86_64.whl (67.3MB)
xpresslibs-9.3.4-cp38-abi3-manylinux2014_aarch64.whl (13.8MB)
xpresslibs-9.3.4-cp38-abi3-win_amd64.whl (51.0MB)