http://yoan.dosimple.ch/blog/2009/11/28/

app.ini

[app:main]
use = egg:app

[server:main]
use = egg:Spawning
host = 127.0.0.1
port = 8000
num_processes = 1
threadpool_workers = 1

app.py

def application(environ, start_response):
    start_response("200 OK", [("Content-Type", "text/html")])
    return ["<h1>Hello World!</h1>",
            "<p>this is a test.</p>"]

def make_app(global_conf, **app_conf):
    return application

fabfile.py

from __future__ import with_statement
from fabric.api import env, run, put, local, cd

env.hosts = ['localhost']
env.path = '~/www/app'

def build_egg():
    local('python setup.py bdist_egg')

def cleanup():
    local('rm -rf build')
    local('rm -rf dist')

def start():
    with cd(env.path):
        run('PYTHONPATH=app.egg paster serve app.ini --daemon --pid-file=app.pid')

def stop():
    with cd(env.path):
        run('paster serve --stop-daemon --pid-file=app.pid')

def deploy():
    build_egg()
    put('app.ini', env.path)
    put('dist/*.egg', env.path+"/app.egg")
    cleanup()

setup.py

from setuptools import setup, find_packages

setup(name='app',
      version='0.1',
      description='example application',
      long_description='',
      keywords='',
      author='Yoan Blanc',
      author_email='yoan@dosimple.ch',
      url='http://yoan.dosimple.ch/blog/',
      license='All rights reserved',
      packages=find_packages(),
      zip_safe=False,
      install_requires=[],
      entry_points={'paste.app_factory': ['main=app:make_app']},
     )