Add generic bootstrap_python() logic

rattail_fabric2/deploy/python/premkvirtualenv

@@ -0,0 +1,16 @@
+#!/bin/bash
+# This hook is run after a new virtualenv is created and before it is activated.
+
+cat >$1/pip.conf <<EOF
+[global]
+log-file = $WORKON_HOME/$1/pip.log
+exists-action = i
+EOF
+
+cat >$1/bin/postactivate <<EOF
+export PIP_CONFIG_FILE=$WORKON_HOME/$1/pip.conf
+EOF
+
+cat >$1/bin/postdeactivate <<EOF
+unset PIP_CONFIG_FILE
+EOF