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

romtools
0.2.1.dev0

This version was deleted from PyPI around 2024-12-13. Installing fails with:
$ pip3 install romtools==0.2.1.dev0 ERROR: Could not find a version that satisfies the requirement romtools==0.2.1.dev0
View other deleted versions of romtools

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/2024-12-12/ \ romtools==0.2.1.dev0
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:
ROMtools-0.2.1.dev0-py3-none-any.whl (12.4KB)
romtools-0.2.1.dev0.tar.gz (11.1KB)