Ignore formula on brew upgrade

Question

I want to do a brew upgrade and tell homebrew do not upgrade the erlang formula since the latest one does not work on my system.

Is it possible

Answer 1

brew pin is the way to go. It will pin the formula to the current version

brew pin

brew unpin can be used to reset this

brew unpin

To view all pinned formulae

brew list --pinned

Note: brew upgrade will not upgrade pinned formulae.