The preferred way of obtaining the current development code is from CVS. You can either browse the CVS source tree or checkout the source code, as explained here. Please note that the current CVS contains the old Objective C-based Lasagne, but it doesn't get installed by default. You must use gcc 3.2.x or later to build the Objective C code.

To download the latest source code archive as a tarball, please go the release list. Please note that the current tarball contains the OLD version of Lasagne (the one written in Objective C).