I have recently been recommending the installation of Coot via Homebrew on macOS.

It is currently not as straightforward as I would like however. Hopefully things will be improved in the future.

One would like to (just) use:

brew install coot

… but that doesn’t work at the moment. So one has to download a formula.

The official home of the formula is from Yoshitaka Moriwaki’s GitHub:

https://raw.githubusercontent.com/YoshitakaMo/homebrew-bio/coot/Formula/coot.rb

That sometimes doesn’t work, so from time to time I update a backup/work-around script:

https://www2.mrc-lmb.cam.ac.uk/personal/pemsley/coot/files/coot.rb

Having downloaded that coot.rb file, the incantation is as follows:

brew install ./coot.rb --HEAD

If you have aleady installed a coot via Homebrew, you will need to delete it first:

brew uninstall coot

Good luck and all that, people!