Iterative Reweighted Least Squares (IRLS) algorithm is added to RxCS software. This implementation of the IRLS allows to solve an l1 optimization problem using an l2 solver. You can find the IRLS algorithm implemented in Python on GitHub. An example of using IRLS to solve an underdetermined system is here.

A wrapper which employs IRLS to solve a compressed sensing problem is also availabe on GitHub, an example of usage is here.