Just discover today, don’t know when it was released, Mamp Pro install Grav in just one click, just specify a folder
specifiy PHP version, apache or nginx etc
admin account created,
plugins installed : admin, email, error, form, login, markdown-notices, problems
themes installed: antimatter
docs : here
http://documentation.mamp.info/en/MAMP-PRO-Mac/Settings/Hosts/Extras/