Pip build directory clashes if two pip instances are running

[ferrouswheel]

We use pip and wheel in our deployment process. If the build server is doing two wheelhouse builds, then the /tmp/pip-build-(user) directory clash and everything goes horribly wrong.

We can use the -b flag to manually specify the build directory, but I feel the user shouldn't have to worry about it.

It seems like this could be fixed by creating a temp dir with tempfile.mkdtemp and using prefix="pip-build-(user)".

[dstufft]

This is planned, however it requires deprecating some features. See #906 for some discussion. The required deprecations will happen in 1.5, so it'll be 1.7 or so when this will be able to happen.

[ferrouswheel]

Thanks for pointing me to it - I was looking for an existing issue but missed that one!

[qwcode]

I just updated the title for #906 to include mention of mkdtemp dirs. closing this as dupe.