American Association of Law Libraries’ (AALL) Hackathon: Building the Information Future, is being held 12 July 2014 in San Antonio, Texas, USA.
Datasets, project ideas, and discussion regarding the event are available at: Law Librarians Hack the Law.
Here is a description from the conference program:
[…]For this workshop, San Antonio programmers and designers will be invited to join with law librarians to use technology to transform a government data set into new resources that will increase the data’s accessibility and discoverability. Teams of librarians and technologists will work collaboratively to plan and implement these projects. The main goals for this hackathon are to create new information sources for patrons and librarians using government information, and to build relationships between the two groups that will go beyond this event and encourage further collaboration in the development of information resources. […]