Differences between revisions 8 and 36 (spanning 28 versions)
Revision 8 as of 2008-01-16 05:34:51
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Editor: PhilipJenvey
Comment: more updates
Revision 36 as of 2009-09-14 22:04:24
Size: 899
Editor: PhilipJenvey
Comment: jinja 2.2.1 now supports jython
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Pylons (0.9.6.1) on Jython Requirements/TODO
============================================
Pylons on Jython
================
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Installing Pylons and its dependencies
--------------------------------------
**Status**: `Jython is supported as of Pylons 0.9.7 <http://pylonshq.com/docs/en/0.9.7/jython/>`_
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  * distutils and setuptools **(Mostly finished, See** `SetuptoolsOnJython`_ **)** Pending Improvements
====================
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  * Ensure all dependencies' tests pass

nose
----

Pylons projects require nose, but most packages (including Pylons) use nose as their own test runners.

requires:

  * optparse module **(added in r4018)**

  * a fix for the cell variable (variables used in closures) bug here: http://pylonshq.com/pasties/667 **(fixed in r4038)**

  * compiler package (and compiler requires the parser module which Jython lacks). nose only needs the compiler module to use compiler.consts.CO_GENERATOR; until there's a parser, maybe jython could provide a broken compiler module that doesn't import parser

Routes
------
Pretty much all tests pass: though some tests require Paste's paste.fixture, which is troublesome to import


Paste, PasteDeploy and PasteScript
----------------------------------
requires:

  * modulefinder module (imported in paste/__init__.py). Jython currently lacks it, and modulefinder relies on reading code objects via marshal.load

  * subprocess module: if it doesn't exist (Python 2.3) it uses a version copied over from CPython 2.4 (paste.util.subprocess24). paste.util.subprocess24 dies on attempting to import fcntl, so Jython needs to provide subprocess

Mako
----
requires:

  * compiler module: to parse Python code into AST. The compiler module is mostly pure Python code, but its guts are really the native parser module (which Jython lacks)

Beaker
------
requires:

  * Paste (for paste.fixture)
  * base64.b64encode: might die on an attempting to import b64encode in beaker.crypto.PBKDF2 (at least it does when the tests are run)

WebHelpers
----------
requires:

  * routes
  * simplejson

FormEncode
----------
requires:

  * gettext (which requires the locale module, which Jython lacks)

simplejson
----------

  * `SetuptoolsOnJython`_ currently has trouble installing simplejson, because it attempts to compile its optional C extensions (that help performance). It expects to catch a distutils.errors.CCompilerError if the compilation fails, but Jython dies much earlier:

  File "/Users/pjenvey/src/java/jython-trunk/dist/Lib/distutils/command/build_ext.py", line 598, in get_ext_filename

  TypeError: cannot concatenate 'str' and 'NoneType' objects

decorator
---------

  * Note: decorators aren't currently supported in Jython, however the decorator module doesn't actually use decorators (works on CPython 2.3)

Later down the road
===================
Support more of the out of the box optional components, such as:
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  * The `Dialect Refactor II <http://www.sqlalchemy.org/trac/ticket/672>`_ ticket will need to be implemented to properly support using SQLAlchemy via Jython's DBAPI jdbc driver, `zxJDBC <http://jython.org/Project/userguide.html#database-connectivity-in-jython>`_.
  
  * Frank Wierzbicki has done some preliminary work on using SQLAlchemy with Jython, info `here <http://groups.google.com/group/sqlalchemy/browse_frm/thread/d60db24fe1683a41/09320033f406d78b?hl=en&lnk=gst>`_, and is scheduled to give a talk at PyCon 2008: "Database development with Jython, SQLAlchemy, and Hibernate"
See `SqlAlchemyOnJython`_

Jinja2
------

Jinja2 is supported on Jython as of version 2.2.1

Genshi
------
Jim Baker and Ariane Paola have played around with Genshi on Jython. Its use of pyexpat is the biggest roadblock. Jython now includes a pyexpat, but it's not fully compatible with CPython's (and doesn't support all the features Genshi uses).

Turbogears 2
------------

Ariane Paola made some progress porting TurboGears 2 components to Jython for Google's Summer of Code. Genshi and SQLAlchemy are the most important pieces that need porting

Older details: `PylonsOnJythonOld`_

Pylons on Jython

Status: Jython is supported as of Pylons 0.9.7

Pending Improvements

Support more of the out of the box optional components, such as:

SQLAlchemy

See SqlAlchemyOnJython

Jinja2

Jinja2 is supported on Jython as of version 2.2.1

Genshi

Jim Baker and Ariane Paola have played around with Genshi on Jython. Its use of pyexpat is the biggest roadblock. Jython now includes a pyexpat, but it's not fully compatible with CPython's (and doesn't support all the features Genshi uses).

Turbogears 2

Ariane Paola made some progress porting TurboGears 2 components to Jython for Google's Summer of Code. Genshi and SQLAlchemy are the most important pieces that need porting

Older details: PylonsOnJythonOld

PylonsOnJython (last edited 2009-09-14 22:04:24 by PhilipJenvey)