Homebrew install problem

Question

Last login: Sat Dec 15 16:24:36 on ttys000
Physicss-MBP:~ Physics$ brew install cadabra2

I typed brew install cadabra2 and I got this message

Updating Homebrew...
Error: No available formula with the name "cadabra2" 
==> Searching for a previously deleted formula (in the last month)...
Warning: homebrew/core is shallow clone. To get complete history run:
  git -C "$(brew --repo homebrew/core)" fetch --unshallow

Error: No previously deleted formula found.
==> Searching for similarly named formulae...
Error: No similarly named formulae found.
==> Searching taps...
==> Searching taps on GitHub...
Error: No formulae found in taps.
Physicss-MBP:~ Physics$ 

Answer 1

The instructions to install like that were published on the web site a bit too early, they should have been commented out. For now you still have to build from source; will post here when brew install cadabra2 works.

Answer 2

There is now the option to install directly using homebrew. First install MacTeX, either directly from its website, or using homebrew,

brew tap caskroom/cask
brew cask install mactex

Then install cadabra using

brew tap kpeeters/repo
brew install cadabra2

These instructions are now also on the download page. Please let me know if you run into any trouble; this has not yet received a lot of testing!