environment `PYTEST_CACHE_DIR_BASE` for better share location

[loynoir]

What's the problem this feature will solve?

Current

$ cd /path/to/project/1
$ export PYTEST_ADDOPTS="-o cache_dir=/build/pytest_cache_dir_base/${PWD:?}"
$ uv run pytest

$ cd /path/to/project/2
$ export PYTEST_ADDOPTS="-o cache_dir=/build/pytest_cache_dir_base/${PWD:?}"
$ uv run pytest

$ cd /path/to/project/3
$ export PYTEST_ADDOPTS="-o cache_dir=/build/pytest_cache_dir_base/${PWD:?}"
$ uv run pytest

Describe the solution you'd like

environment PYTEST_CACHE_DIR_BASE for better share location

$ export PYTEST_CACHE_DIR_BASE="/build/pytest_cache_dir_base"

$ cd /path/to/project/1
$ uv run pytest

$ cd /path/to/project/2
$ uv run pytest

$ cd /path/to/project/3
$ uv run pytest

Alternative Solutions

Additional context

[RonnyPfannschmidt]

Cache is used for last failed and other project specific plugins

This proposal as is will just break