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

flask-packer
2.1.8

This version was deleted from PyPI around 2024-03-10. Installing fails with:
$ pip3 install flask-packer==2.1.8 ERROR: Could not find a version that satisfies the requirement flask-packer==2.1.8
View other deleted versions of flask-packer

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/2024-03-09/ \ flask-packer==2.1.8
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Or, download files manually

And install manually via pip:
flask_packer-2.1.8-py3-none-any.whl (18.0KB)
flask-packer-2.1.8.tar.gz (16.7KB)