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

iamai-adapter-cqhttp
0.6.1

This version was deleted from PyPI around 2023-10-21. Installing fails with:
$ pip3 install iamai-adapter-cqhttp==0.6.1 ERROR: Could not find a version that satisfies the requirement iamai-adapter-cqhttp==0.6.1
View other deleted versions of iamai-adapter-cqhttp

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/2023-10-20/ \ iamai-adapter-cqhttp==0.6.1
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Or, download files manually

And install manually via pip:
iamai_adapter_cqhttp-0.6.1-py3-none-any.whl (10.3KB)
iamai_adapter_cqhttp-0.6.1.tar.gz (8.5KB)