Installing Nektar++ on OS X through MacPorts or Homebrew

Installing Nektar++ on OS X through MacPorts or Homebrew
This post briefly summarises how to install Nektar++ using either the MacPorts or Homebrew package managers. Both of these install a version of Nektar++ that includes MPI for parallel execution, ARPACK for stability analysis, FFTW for homogeneous expansions, PETSc support and a full set of solvers. They can also both be used to install development versions of Nektar++.