The guifi.net development is hosted at lafarga:
https://projectes.lafarga.cat/projects/guifi

The incident tracking can be fount at the TRAC:
trac.guifi.net

Developers wellcome:

This code is still beta, however it runs . Subscribe to the developers mailing lists to get more information and in contact with the team.

To get more information about the subversion, look at the

subversion handbook.

Examples:

• To obtain the guifi.net modules for drupal:
  

  svn co https://svn.projectes.lafarga.cat/svn/guifi/drupal6x/modules modules/  

• To commit changes (only developers).

  svn commit --username usuari --password pass --message "Tell here what you have changed"