Update new Django and Python 2.7.* with virtualenv on Dreamhost (with passenger)

I currently have private server, a shell account and a bit of luck. So here is what I do:

SSH to your host to upgrade python

 cd ~
 mkdir tmp
 cd tmp
 wget http://www.python.org/ftp/python/2.7.3/Python-2.7.3.tgz
 tar zxvf Python-2.7.3.tgz
 cd Python-2.7.3
 ./configure --enable-shared --prefix=$HOME/Python27 --enable-unicode=ucs4
 make
 make install

Configure system to use our new Python. Open ~/.bashrc and add the following line
```
 export PATH="$HOME/Python27/bin:$PATH"
 export LD_LIBRARY_PATH=$HOME/Python27/lib

 #save it and run
 source ~/.bashrc
```
you can now check your python version with which python

Install easy_install, pip

cd ~/tmp
wget http://peak.telecommunity.com/dist/ez_setup.py
python ez_setup.py
easy_install pip
# Or even shorter
wget https://bootstrap.pypa.io/get-pip.py
python get-pip.py

Install virtualenv

 pip install virtualenv
 virtualenv $HOME/<site>/env
 #Switch to virtualenv
 source $HOME/<site>/env/bin/activate

you can also add env path to bashrc

 export PATH="$HOME/<site>/env/bin/:$PATH"
 source ~/.bashrc

Install django and everything else

 pip install django
 pip install ....
 pip install ....
 pip install ....

Create project

 cd $HOME/<site>/
 python $HOME/<site>/env/bin/django-admin.py startproject project

Create passenger_wsgi.py in HOME/<site>/ with following content

 import sys, os
 cwd = os.getcwd()
 sys.path.append(cwd)
 sys.path.append(cwd + '/project')  #You must add your project here or 500

 #Switch to new python
 #You may try to replace $HOME with your actual path
 if sys.version < "2.7.3": os.execl("$HOME/<site>/env/bin/python",
     "python2.7.3", *sys.argv)

 sys.path.insert(0,'$HOME/<site>/env/bin')
 sys.path.insert(0,'$HOME/<site>/env/lib/python2.7/site-packages/django')
 sys.path.insert(0,'$HOME/<site>/env/lib/python2.7/site-packages')

 os.environ['DJANGO_SETTINGS_MODULE'] = "project.settings"
 import django.core.handlers.wsgi
 application = django.core.handlers.wsgi.WSGIHandler()

or this way

import sys, os

BASE_DIR = os.path.dirname(os.path.abspath(__file__))

sys.path.append(os.path.join(BASE_DIR))  #You must add your project here or 500

#Switch to new python
#You may try to replace $HOME with your actual path
PYTHON_PATH = os.path.join(BASE_DIR, 'env', 'bin', 'python')
if sys.executable != PYTHON_PATH:
    os.execl(PYTHON_PATH, "python2.7.12", *sys.argv)

If you are using django 1.7, replace the last two line with

from django.core.wsgi import get_wsgi_application
application = get_wsgi_application()

Enjoy :D

New version of python on Dreamhost will no longer return sys.executable so you this is my version of passenger_wsgi

import sys, os

VIRTUAL_ENV_PYTHON = 'venv-python'  # Python > 2.7.6 dreamhost not return sys.executable
BASE_DIR = os.path.dirname(os.path.abspath(__file__))

def is_venv_python():
    if len(sys.argv) > 0:
        last_item = sys.argv[len(sys.argv)-1]
        if last_item == VIRTUAL_ENV_PYTHON:
            return True
    return False

sys.path.append(os.path.join(BASE_DIR))  #You must add your project here or 500

#Switch to new python

PYTHON_PATH = os.path.join(BASE_DIR, 'env', 'bin', 'python')
if not is_venv_python():
    os.execl(PYTHON_PATH, "python2.7.12", *sys.argv + [VIRTUAL_ENV_PYTHON])

sys.path.insert(0, os.path.join(BASE_DIR, 'env', 'bin'))
sys.path.insert(0, os.path.join(
    BASE_DIR, 'env', 'lib', 'python2.7', 'site-packages'
))

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