gal-sim.rb

require 'formula'

class GalSim < Formula
  homepage 'https://github.com/GalSim-developers/GalSim'
  url 'https://github.com/GalSim-developers/GalSim/archive/v1.0.0.tar.gz'
  sha1 '705ef051f45202e973d2dbb6be8a54a4969bf0c9'
  head 'https://github.com/GalSim-developers/GalSim.git'

  depends_on 'scons' => :build
  depends_on 'fftw'
  depends_on 'boost'
  depends_on 'tmv-cpp'

  # pyfits should come from pip
  depends_on 'pyfits' => :python
  depends_on 'numpy' => :python

  def pyver
    IO.popen("python -c 'import sys; print sys.version[:3]'").read.strip
  end

  def install
    # This ought to be part of a standard homebrew install;
    # required so that homebrew creates symlinks
    #   lib/pythonX.Y/galsim -> Cellar/gal-sim/0.2/lib/pythonX.Y/galsim
    # rather than
    #   lib/pythonX.Y -> Cellar/gal-sim/0.2/lib/pythonX.Y
    ohai "Python version is #{pyver}"
    mkdir_p "#{HOMEBREW_PREFIX}/lib/python#{pyver}"
    system "scons"
    system "scons install PREFIX=#{prefix} PYPREFIX=#{lib}/python#{pyver}"
  end

  def caveats; <<-EOS.undent
    The GalSim installer may warn you that #{lib}/python isn't in your python search path.
    You may want to add all Homebrew python packages to the default paths by running:
       sudo bash -c 'echo \"/usr/local/lib/python\" >> \\\\
         /Library/Python/#{pyver}/site-packages/homebrew.pth'
    Which will create the file   /Library/Python/#{pyver}/site-packages/homebrew.pth
    with contents:
      /usr/local/lib/python#{pyver}
    EOS
  end

end