1. Sébastien Martinez
  2. pymoult


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Pymoult is a Pypy library providing a prototyping platform for dynamic software updates (DSU). It provides as many DSU mechanisms from the literature as possible through a generic API.

To read the manual of Pymoult, please follow this link

A simple tutorial to Pymoult is available here.


Pymoult is published under the GPLv2 license (see LICENSE.txt) Pypy-Dsu (required by Pymoult) is a fork of Pypy, published under specific licenses.


The work on Pymoult, Cmoult and other derivatives is funded by the Brittany Regional Council, as a part of project IMAJD.



Pymoult requires Pypy-Dsu, our custom pypy interpreter enhanced with specific DSU functionalists. You can install it by following the instructions here

Installing on Linux

  1. Install the distribute module for pypy your favorite way

  2. Install pymoult

    $> pypy setup.py install --prefix=<your_prefix>

  3. Export your new PYTHONPATH

    $> export PYTHONPATH=$PYTHONPATH:<your_prefix>/site-packages

Installing on Archlinux

A package is available on AUR here :


Virtual Machine

A Virtual machine with the custom pypy-dsu installed as well as Pymoult can be downloaded on the following link.


The pydoc can be generated with the doc.sh script

$> bash doc.sh

The pydoc will be generated in the doc folder, open doc/pymoult.html to start browsing.