Schizoid

Creates an isolated python environment with (almost) no dependencies with the outer world.

Dependencies

Schizoid does its best effort to avoid communicating with the outer world, but at some extent it needs resources to operate properly. There are two types of dependencies:

Life dependencies

These are the unavoidable dependencies you need in your system to run schizoid.sh and create a virtual environment. It can be summarized to one:

• virtualenv

This package has its own dependencies, in debian boxes they are:

• python
• python-central (>= 0.6.6) (only in lenny)
• python-support (>= 0.90.0) (from squeeze on)
• python-pkg-resources
• python-setuptools

Avoidable dependencies

Every package is downloaded, compiled and installed inside the virtual environment, except for one: the database. It would be not-smart to compile and install a database engine, so we rely on the system to provide us with such service.

Schizoid installs the MySQLdb driver, but you can install a different one or no driver at all.

Structure

Suppose you install the virtual environment in ~/venv, then the resulting directories structure would look like:

~/venv
    bin/
    include/
    lib/
        pkgconfig/
    lib64@ -> ~/venv/lib  (only in 64bits systems)
    share/
        alocal/
        doc/
        gettext/
        info/
        locale/
        man/
    src/
        django-1.3.X/

Software

By default schizoid.sh downloads, compiles (when required) and installs the following software:

• Python 2.7
• mod_wsgi
• setuptools 0.6c11
• pip 0.8.2
• GNU gettext 0.18.1.1
• memcached
• pep8
• ipdb
• ipython
• mysql-python
• python-dateutil
• python-memcached
• soaplib
• suds
• pygraphviz (to use with django_extensions)
• django-admin-tools
• docutils
• django 1.3.X

Post-install

When Schizoid finishes installing everything it looks for a file named post_install.sh to execute user-defined actions. Remember that it must be an executable file.

By default it doesn't exists, you have to create it with the proper permissions.

TO-DO list

• Install dependencies in debian systems. (Currently works only on yum-based boxes.)
• Allow for easy customization.
• Recognize partially installed environments and continue from checkpoint.

Right now works good for me, so I don't think I'm going to add any of these features. If you want to do it I will gladly merge your improvements.

Happy hacking!

:wq