EAPI

EAPI is ebuilds and other package manager related files which informs the package manager about the file syntax and content.]]

The EAPI versions (and their meaning) are defined in the Package Manager Specification (PMS). Currently, EAPIs 0 through 7 are defined and officially supported. In the main Gentoo repository, EAPIs 0 to 4 are banned for new ebuilds, while 5 has been deprecated.

External resources

 * EAPI Usage and Description (Gentoo Development Guide)
 * The ultimate guide to EAPI 7 (Michał Górny's blog)