Having issues installing some python modules (for example pandas) and also had some issues installing ipython notebook. This error seems to have come up before for other folks (Python pip install fails: invalid command egg_info), but they were using Python 2.7, whereas I'm using 2.6 (default with my Mac OS 10.6). Also I tried easy_install -U setuptools and pip install --upgrade setuptools but neither worked. This is the error I get for installing pandas: Command python setup.py egg_info failed with error code 1 in /private/var/folders/Wm/WmmbYincEnuCrAMtGBudAk+++TM/-Tmp-/pip_build_AWal/pandas Storing debug log for failure in /Users/AWal/Library/Logs/pip.log For installing iPython, this is the error that I get: Exception: Traceback (most recent call last): File "/Library/Python/2.6/site-packages/pip-1.5.4-py2.6.egg/pip/basecommand.py", line 122, in main status = self.run(options, args) File "/Library/Python/2.6/site-packages/pip-1.5.4-py2.6.egg/pip/commands/install.py", line 283, in run requirement_set.install(install_options, global_options, root=options.root_path) File "/Library/Python/2.6/site-packages/pip-1.5.4-py2.6.egg/pip/req.py", line 1435, in install requirement.install(install_options, global_options, *args, **kwargs) File "/Library/Python/2.6/site-packages/pip-1.5.4-py2.6.egg/pip/req.py", line 671, in install self.move_wheel_files(self.source_dir, root=root) File "/Library/Python/2.6/site-packages/pip-1.5.4-py2.6.egg/pip/req.py", line 901, in move_wheel_files pycompile=self.pycompile, File "/Library/Python/2.6/site-packages/pip-1.5.4-py2.6.egg/pip/wheel.py", line 341, in move_wheel_files generated.extend(maker.make_multiple(['%s = %s' % kv for kv in console.items()])) File "/Library/Python/2.6/site-packages/pip-1.5.4-py2.6.egg/pip/_vendor/distlib/scripts.py", line 316, in make_multiple filenames.extend(self.make(specification, options)) File "/Library/Python/2.6/site-packages/pip-1.5.4-py2.6.egg/pip/_vendor/distlib/scripts.py", line 305, in make self._make_script(entry, filenames, options=options) File "/Library/Python/2.6/site-packages/pip-1.5.4-py2.6.egg/pip/_vendor/distlib/scripts.py", line 209, in _make_script self._write_script(scriptnames, shebang, script, filenames, ext) File "/Library/Python/2.6/site-packages/pip-1.5.4-py2.6.egg/pip/_vendor/distlib/scripts.py", line 189, in _write_script self._fileop.write_binary_file(outname, script_bytes) File "/Library/Python/2.6/site-packages/pip-1.5.4-py2.6.egg/pip/_vendor/distlib/util.py", line 384, in write_binary_file with open(path, 'wb') as f: IOError: [Errno 13] Permission denied: '/usr/local/bin/sphinx-apidoc' Storing debug log for failure in /Users/AWal/Library/Logs/pip.log Any thoughts on what to do? UPDATE: When I do sudo pip install pandas (another module that I can't install), I get a long long traceback with the end error message: RuntimeError: Broken toolchain: cannot link a simple C program And traceback (a sample of it of the 100 or so lines) looks like this: Traceback (most recent call last): File "<string>", line 17, in <module> File "/private/tmp/pip_build_root/pandas/setup.py", line 619, in <module> **setuptools_kwargs) File "/System/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/distutils/core.py", line 113, in setup File "build/bdist.macosx-10.6-universal/egg/setuptools/dist.py", line 266, in __init__ File "build/bdist.macosx-10.6-universal/egg/setuptools/dist.py", line 312, in fetch_build_eggs File "build/bdist.macosx-10.6-universal/egg/pkg_resources/__init__.py", line 753, in resolve File "build/bdist.macosx-10.6-universal/egg/pkg_resources/__init__.py", line 1005, in best_match File "build/bdist.macosx-10.6-universal/egg/pkg_resources/__init__.py", line 1017, in obtain File "build/bdist.macosx-10.6-universal/egg/setuptools/dist.py", line 379, in fetch_build_egg File "build/bdist.macosx-10.6-universal/egg/setuptools/command/easy_install.py", line 619, in easy_install Continue reading...