If you're using openzeppelin-foundry-upgrades, you may know that it does not support deterministic proxy deployment (only when using openzeppelin defender). Here's a little PoC on how you can do it yourself, while keeping the rest of the functionality.

https://github.com/pimlicolabs/magic-spend/blob/main/src/MagicSpendFactory.sol#L16

Thanks for sharing this PoC on how to achieve deterministic proxy deployment without using openzeppelin defender with openzeppelin-foundry-upgrades. It's always valuable to explore alternative solutions for maintaining functionality.