Fixes #157451 If/when einops releases a version greater than 0.8.1, it will just break (without this patch). The history is: - Between 2.6 and 2.7, we tried to delete the einops import (#142847) - That didn't work so well, so we applied a hotfix in 2.7.1. (#153925) - The hotfix wasn't completely correct (0.8.1 is the latest version of einops, so the condition in the hotfix just always evaluates to True!) - It turns out we didn't need to delete the einops import. We already do not eagerly import einops. - I reverted the code back to the state it was in in 2.6. https://github.com/pytorch/pytorch/blob/release/2.6/torch/_dynamo/decorators.py Test Plan: - We have testing in CI for einops 0.6.1, 0.7.0, and 0.8.1. Wait for CI. [ghstack-poisoned]