uv sync fails due to invalid cache #12274
Description
Summary
It started happening right after upgrading from 0.6.5 to 0.6.6.
In our environment, ~/.cache/uv is cached between CI runs. My theory is that for some time uv 0.6.5 ran alternating with 0.6.6 on different branches sharing the same cache, as the issue did not happen when 0.6.6 was first introduced.
The error itself is very similar to the one fixed in #11105, but it comes from a different place:
$ uv sync --frozen --no-dev --extra xyz
error: Failed to determine installation plan
Caused by: Failed to deserialize cache entry
Caused by: array had incorrect length, expected 4
After a cursory glance at the code of Planner.build(), it looks like caching didn't get the same treatment in {Http,Local}ArchivePointer::read_from() as SourceDistributionBuilder::url_metadata() got in #11105
Platform
Debian 12 (bookworm)
Version
uv 0.6.6
Python version
CPython 3.11.2