Using --download-cache can cause builds to fail

[stringfellow]

If you add the --download-cache option to pip-accel install, it can result in a build directory being present which stops pip continuing the build on the next run (because pip complains that the source build is already present).

Without using the --download-cache option, it works fine.

I guess this is a change in pip since the latest release, as it used to (prior to about a week ago) work fine.

[xolox]

Thanks for the feedback and sorry for the late response. Judging by the date you opened this issue (2013-07-29) the problem you reported was indeed related to the release of a new version of pip, specifically 1.4 (released 2013-07-23). That version introduced PreviousBuildDirError which broke pip-accel. This problem was fixed in a39bc89 and 089c9e1. Since the problem you reported was fixed, I'm closing this issue. Feel free to reopen the issue if the problem persists for you.