I was running the installation instructions, and found that standard tar is sufficient enough to install this script. I recommend removing that section for mac installation, as you're basically renaming tar to tar-bsd, which will error out several of your bash scripts that download a tar.gz file.
Gnu-tar is needed to build bashums. Gnu-tar is a prereq so that anything that would need to tar/untar archives has a valid installation of tar. As long as the prereq is satisfied, nothing should be affected.
I was running the installation instructions, and found that standard tar is sufficient enough to install this script. I recommend removing that section for mac installation, as you're basically renaming tar to tar-bsd, which will error out several of your bash scripts that download a tar.gz file.
If I'm missing something, let me know.