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

lxml
0.9.1

This version was deleted from PyPI around 2024-01-06. Installing fails with:
$ pip3 install lxml==0.9.1 ERROR: Could not find a version that satisfies the requirement lxml==0.9.1
View other deleted versions of lxml

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/2024-01-05/ \ lxml==0.9.1
Sign up for StableBuild to get an API key (it's free and takes <60 seconds!)

Or, download files manually

And install manually via pip:
lxml-0.9.1-py2.3-linux-i686.egg (486.3KB)
lxml-0.9.1-py2.4-freebsd-6.0-RELEASE-i386.egg (151.3KB)
lxml-0.9.1-py2.4-linux-i686.egg (138.6KB)
lxml-0.9.1-py2.4-linux-x86_64.egg (156.9KB)
lxml-0.9.1-py2.4-macosx-10.4-ppc.egg (300.6KB)
lxml-0.9.1-py2.4-win32.egg (124.7KB)
lxml-0.9.1.tar.gz (250.0KB)
lxml-0.9.1.win32-py2.4.exe (151.4KB)