It looks like there will be a couple great new plugins come out with the next release.

OpenID

The first, as hinted before, is going to be support for OpenID. The plugin will allow to add a new login form where the user can enter their OpenID. Obviously, the account edit view needs to be extended to allow setting an OpenID for the account.

Wordpress

The second plugin is going to be support for Wordpress. In contrast to the available zen-cart mod this plugin will work by adding wordpress template files to your theme. So, all code is still in one place. Support for other wordpress plugins is implicit, so nothing else required.

The plugin works by including wordpress code with themes disabled (WP_USE_THEMES). Then all URL generation is modified using wordpress filters - a great extension mechanism.

The only issue I have right now is that the main wordpress code needs to be included globally, so this can’t be done from within a function. The reason being that there are a number of globals that wordpress needs :/ So, a few changes to the Zenmagick plugin architecture were required to make this work (not great, but ok).