bash script to fix a br0ken python virtual env after a python upgrade. Usable probably only on OS X. This script uses a known-good „p27“ virtual env — recreate this manually.

fix-venv

#!/bin/bash
#set -x

VENV=$1
VH=$VIRTUALENV_ROOT/$VENV

# Adjust this to the actual python version you want to convert your venv to
PYTHON_ROOT=/usr/local/Cellar/python/2.7.6/Frameworks/Python.framework/Versions/2.7

test -d "$VIRTUALENV_ROOT/p27" || {
	echo "need a p27 venv to copy stuff from.  This needs to be a working venv."
	exit 12
}

test -d $VH || {
	echo "$VH?"
	exit 10
}

cd $VH

test -L "include/python2.7" || {
	echo "not python2.7"
	exit 11
}

echo "fixing .Python"
(
	ls -la .Python
	ln -sf $PYTHON_ROOT/Python .Python
	ls -la .Python
)

echo "fixing bin"
(
	cd bin
	cp $VIRTUALENV_ROOT/p27/bin/python .
)

echo "fixing includes"
(
	cd include
	ls -la python2.7
	ln -sf $PYTHON_ROOT/include/python2.7 python2.7
	ls -la python2.7
)


echo "fixing lib"
(
	cd lib/python2.7
	rm -f *.pyc
	for pf in *; do
		test -L $pf && {
			ln -sf $PYTHON_ROOT/lib/python2.7/$pf $pf
		}
	done
	cp $VIRTUALENV_ROOT/p27/lib/python2.7/site.py .
	cp $VIRTUALENV_ROOT/p27/lib/python2.7/orig-prefix.txt .
)

# vim: set ts=4 sw=4 nolist expandtab:

It's rather hacky.