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

cmake
3.28.0

This version was deleted from PyPI around 2026-04-01. Installing fails with:
$ pip3 install cmake==3.28.0 ERROR: Could not find a version that satisfies the requirement cmake==3.28.0
View other deleted versions of cmake

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/2026-03-31/ \ cmake==3.28.0
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:
cmake-3.28.0-py2.py3-none-macosx_10_10_universal2.macosx_10_10_x86_64.macosx_11_0_arm64.macosx_11_0_universal2.whl (46.2MB)
cmake-3.28.0-py2.py3-none-manylinux2010_i686.manylinux_2_12_i686.whl (24.9MB)
cmake-3.28.0-py2.py3-none-manylinux2010_x86_64.manylinux_2_12_x86_64.whl (24.1MB)
cmake-3.28.0-py2.py3-none-manylinux2014_aarch64.manylinux_2_17_aarch64.whl (24.5MB)
cmake-3.28.0-py2.py3-none-manylinux2014_i686.manylinux_2_17_i686.whl (26.1MB)
cmake-3.28.0-py2.py3-none-manylinux2014_ppc64le.manylinux_2_17_ppc64le.whl (27.8MB)
cmake-3.28.0-py2.py3-none-manylinux2014_s390x.manylinux_2_17_s390x.whl (24.3MB)
cmake-3.28.0-py2.py3-none-manylinux2014_x86_64.manylinux_2_17_x86_64.whl (25.1MB)
cmake-3.28.0-py2.py3-none-musllinux_1_1_aarch64.whl (25.3MB)
cmake-3.28.0-py2.py3-none-musllinux_1_1_i686.whl (28.5MB)
cmake-3.28.0-py2.py3-none-musllinux_1_1_ppc64le.whl (29.3MB)
cmake-3.28.0-py2.py3-none-musllinux_1_1_s390x.whl (25.4MB)
cmake-3.28.0-py2.py3-none-musllinux_1_1_x86_64.whl (26.8MB)
cmake-3.28.0-py2.py3-none-win_amd64.whl (34.1MB)
cmake-3.28.0-py2.py3-none-win_arm64.whl (32.9MB)
cmake-3.28.0-py2.py3-none-win32.whl (30.7MB)
cmake-3.28.0.tar.gz (41.2KB)