[Pythonmac-SIG] easy_install broken on new macbook (includes solution)
amos at latteier.com
Mon Oct 20 01:42:55 CEST 2008
I just got a new aluminum macbook. It's great expect that it seems to
ship with a broken easy_install. I tracked down the problem and
submitted a bug to apple (bug #6302565). I'm sending the details
to this mailing list in hopes that it can help others, or perhaps others
can point out a better solution.
The easy_install python command line tool fails to install python
package that include c extensions on my new macbook.
Here's how to reproduce the problem:
$ easy_install simple_json
You will get an error message that ends with an error message like this:
No eggs found in
3CNYn-/simplejson-2.0.3/egg-dist-tmp-EOUkj5 (setup script problem?)
error: Could not find required distribution simplejson
You don't have to use simple_json, any python package with c
extensions will trigger the problem.
The problem is that the apple-specific version of pkg_resources.py (in
shipped with the new macbooks changes the macos version number (line
if not _cache:
# don't call sw_vers because that causes a SIGTRAP in gdb
_cache = [['10.5', '1']]
Previously the version was 10.5, not 10.5.1. This change is a problem
because the regular expression that checks version numbers (on line
194) doesn't work with it.
macosVersionString = re.compile(r"macosx-(\d+)\.(\d+)(.*)")
One solution is to change the regular expression to something like the
macosVersionString = re.compile(r"macosx-(\d+)\.(\d+).*?-(.*)")
I have verified that this fix solves the problem for me.
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