New review comment by tornaria on void-packages repository

https://github.com/void-linux/void-packages/pull/43946#discussion_r1212349960

Comment:
I agree with removing only what was created in this run (i.e. just `${tmpdir}`).

Also, in terms of avoiding conflicts, maybe the tmpdir should be something more "unique". Perhaps `${wrksrc}/.xbps-tmpdir/$(data +%s)` which also has the advantage that pytest will not recurse hidden directories, so the `--ignore ..` doesn't seem to be necessary.