nest 2.20.0 (new formula)

Formula/nest.rb

@@ -0,0 +1,87 @@
+class Nest < Formula
+  desc "The Neural Simulation Tool (NEST) with Python3 bindings (PyNEST)"
+  homepage "https://www.nest-simulator.org/"
+  url "https://github.com/nest/nest-simulator/archive/v2.20.0.tar.gz"
+  sha256 "40e33187c22d6e843d80095b221fa7fd5ebe4dbc0116765a91fc5c425dd0eca4"
+
+  depends_on "cmake" => :build
+  depends_on "cython" => :build
+  depends_on "gsl"
+  depends_on "libomp"
+  depends_on "libtool"
+  depends_on "numpy"
+  depends_on "python@3.8"
+  depends_on "readline"
+  depends_on "scipy"
+
+  resource "nose" do
+    url "https://files.pythonhosted.org/packages/58/a5/0dc93c3ec33f4e281849523a5a913fa1eea9a3068acfa754d44d88107a44/nose-1.3.7.tar.gz"
+    sha256 "f1bffef9cbc82628f6e7d7b40d7e255aefaa1adb6a1b1d26c69a8b79e6208a98"
+  end
+  resource "six" do
+    url "https://files.pythonhosted.org/packages/6b/34/415834bfdafca3c5f451532e8a8d9ba89a21c9743a0c59fbd0205c7f9426/six-1.15.0.tar.gz"
+    sha256 "30639c035cdb23534cd4aa2dd52c3bf48f06e5f4a941509c8bafd8ce11080259"
+  end
+
+  def install
+    args = ["-DCMAKE_INSTALL_PREFIX:PATH=#{prefix}"]
+
+    libomp = Formula["libomp"]
+    args << "-Dwith-python=3"
+    args << "-Dwith-openmp=ON"
+    args << "-Dwith-libraries=#{libomp.opt_lib}/libomp.dylib"
+    args << "-DOpenMP_C_FLAGS=-Xpreprocessor\ -fopenmp\ -I#{libomp.opt_include}"
+    args << "-DOpenMP_C_LIB_NAMES=omp"
+    args << "-DOpenMP_CXX_FLAGS=-Xpreprocessor\ -fopenmp\ -I#{libomp.opt_include}"
+    args << "-DOpenMP_CXX_LIB_NAMES=omp"
+    args << "-DOpenMP_omp_LIBRARY=#{libomp.opt_lib}/libomp.dylib"
+    python_exec = "python3"
+
+    python_version = Language::Python.major_minor_version(python_exec)
+    bundle_path = libexec/"lib/python#{python_version}/site-packages"
+    bundle_path.mkpath
+
+    resource("nose").stage do
+      system python_exec, *Language::Python.setup_install_args(libexec)
+    end
+    resource("six").stage do
+      system python_exec, *Language::Python.setup_install_args(libexec)
+    end
+    ENV.prepend_create_path "PATH", libexec/"bin"
+    ENV.prepend_create_path "PYTHONPATH", bundle_path
+
+    mkdir "build" do
+      system "cmake", "..", *args
+      system "make"
+      system "make", "install"
+      system "make", "installcheck"
+    end
+
+    # Replace internally accessible gcc with externally accesible version
+    # in nest-config if required
+    inreplace bin/"nest-config",
+        %r{#{HOMEBREW_REPOSITORY}/Library/Homebrew/shims.*/super},
+        "#{HOMEBREW_PREFIX}/bin"
+  end
+
+  def caveats
+    python = Formula["python@3.8"]
+    <<~EOS
+      The PyNEST bindings and its dependencies are installed with the python@3.8 formula.
+      If you want to use PyNEST, use the Python interpreter from this path:
+
+          #{python.bin}
+
+      You may want to add this to your PATH.
+    EOS
+  end
+
+  test do
+    python = Formula["python@3.8"]
+    # check whether NEST was compiled & linked
+    system bin/"nest", "--version"
+
+    # check whether NEST is importable form python
+    system python.bin/"python3.8", "-c", "'import nest'"
+  end
+end