Elisa Ferracane

Looks like you don't have prolog installed: `/bin/sh: 1: swipl: not found` Be sure to install prolog using `brew install homebrew/x11/swi-prolog` or `brew install swi-prolog`

Looks like you're still missing some setup: ` flex: Command not found` Per the README: `- Alchemy also needs Bison 2.3 (already installed), Flex 2.5.4 (already installed) and Perl 5.8.8...