Hi! I have noticed an interesting difference when installing Numeric-20.3 against python-2.1 vs. python-2.2. When installing against python-2.1, setup trys to write to /usr/lib/python2.1/distutils/command/install_headers.pyc But when installing against python-2.2, this doesn't happen. Note: this question came up because I am making an ebuild (basically a compile and install script) for Gentoo linux, http://www.gentoo.org. The attempted write to install_headers.pyc with python-2.1 violates Gentoo's sandboxed build environment causing the merge to fail. If you are interested see http://bugs.gentoo.org/show_bug.cgi?id=21 Just curious if there is a known explanation for this. The simple fix on my end, is to set the dependency >=python-2.2. Thanks for the great program! tod