Re: How to manually install Regina in MacOS Sierra and OSX El Captain?
I can't comment on El Capitan but I've just dropped Regina on got my macOS Sierra MacBook.
The steps were:
1. Download the latest tar from SorceForge
2. Expand the tar into a directory
3. Add the bin directory to my PATH environment var.
3. Add the lib directory to the DYLD_LIBRARY_PATH environment var.
5. Run regina -v