Fix for issue #8577: without this patch test_distutils will fail when builddir != srcdir (that is, when you run configure in a directory that is not the top of the source tree).
Fix for issue #8577: without this patch test_distutils
will fail when builddir != srcdir (that is, when you
run configure in a directory that is not the top of
the source tree).

pypa/setuptools,pypa/setuptools,pypa/setuptools