uv

5206a33e - Do not error if the `CACHEDIR.TAG` file exists but cannot be written to (#7550)

Do not error if the `CACHEDIR.TAG` file exists but cannot be written to (#7550) Attempting to address the error in https://github.com/astral-sh/uv/issues/7434 — it seems overkill to fail if the file exists but isn't writable.