Installing Graphviz 2.36. on macOS Sierra

Question

I am trying to install GraphViz plugIn on Protege. I install Graphviz2.36 package first but it doesn't work. Then I used brew install graphviz I got this error Warning: graphviz-2.38.0_1 already installed, it's just not linked. Therefore, I used brew link graphviz but I got this error

Error: Could not symlink bin/acyclic
Target /usr/local/bin/acyclic
already exists. You may want to remove it:
rm '/usr/local/bin/acyclic'

because of this, I used brew link --overwrite graphviz which I got this error:

Error: Could not symlink include/graphviz/arith.h /usr/local/include/graphviz is not writable.

Anyone knows how can I fix this problem?

Answer 1

I was able to get past this by setting the following permissions

sudo chown -R "$USER":admin /usr/local/include/graphviz
sudo chown -R "$USER":admin /usr/local/share/graphviz
sudo chown -R "$USER":admin /usr/local/lib/graphviz
brew link --overwrite graphviz