If I run composer require edalzell/statamic-mailchimp as per the Readme instructions I get the following error:
[InvalidArgumentException]
Could not find a matching version of package edalzell/statamic-mailchimp. Check the package spelling, your version constraint and that the package is available in a stability which matches your minimum-stability (dev).
It looks like the Add On Installer inside Statamic runs composer require edalzell/mailchimp and that does indeed install the Add On.
If I run
composer require edalzell/statamic-mailchimpas per the Readme instructions I get the following error:It looks like the Add On Installer inside Statamic runs
composer require edalzell/mailchimpand that does indeed install the Add On.