Rename/move the brew formula for EPANETMSX compatibility.

Also adds the ruby brew formula to the manifest for source distributions.

.github/workflows/build_tests.yml

@@ -83,7 +83,7 @@ jobs:
         python-version: ${{ matrix.python-version }}
     - if: ${{ matrix.os == 'macos-latest' || matrix.os == 'macOS-13'}}
       run: |
-        brew reinstall --build-from-source --formula ./shell/apple/libomp.rb
+        brew reinstall --build-from-source --formula wntr/epanet/libepanet/darwin-formula/libomp.rb
     - name: Install dependencies
       run: |
         python --version

MANIFEST.in

@@ -10,3 +10,4 @@ include wntr/sim/network_isolation/numpy.i
 include wntr/tests/networks_for_testing/*.inp
 include wntr/library/msx/*.json
 include wntr/library/msx/*.msx
+include wntr/epanet/libepanet/darwin-formula/libomp.rb

documentation/installation.rst

@@ -161,6 +161,20 @@ Step 2: Install WNTR
 	     during the setup process. This requires that the user has a C++ compiler (e.g., Visual Studio C++, GNU C++, MinGW) on their path.
 	     No compiler is needed when installing WNTR through PyPI (Option 1) or conda (Option 2). 
 
+
+.. note:: Mac builds and EPANETMSX
+
+   The builds of EPANETMSX for Mac require the OpenMP package be installed. This is easiest to do using
+   homebrew. A brew recipe is provided with WNTR that will obtain the appropriate libraries. To use it,
+   download the https://github.com/USEPA/WNTR/tree/main/wntr/epanet/libepanet/darwin-formula/libomp.rb 
+   formula directly and brew it, or use the command below.
+   This should install the necessary libraries onto your machine to be able to run WNTR with EPANETMSX extensions.
+
+   .. code:: bash
+	  
+	  brew reinstall --build-from-source --formula https://github.com/USEPA/WNTR/tree/main/wntr/epanet/libepanet/darwin-formula/libomp.rb
+
+
 Step 3: Test installation
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^