Released v6.0.7 * Fix a regression where Numpy requires a build path without symlinks to properly build. * Fix a broken log message when running ``pip wheel`` without a requirement. * Don't mask network errors while downloading the file as a hash failure. * Properly create the state file for the pip version check so it only happens once a week. * Fix an issue where switching between Python 3 and Python 2 would evict cached items. * Fix a regression where pip would be unable to successfully uninstall a project without a normalized version.