EAPI 6

A new EAPI=6 has been released as of 2015-11-13. A noticeable changes and explanation of new features are given below.

bash version

Bash version Ebuilds can use features of Bash version 4.2 (was 3.2 before).

The ebuild file format is in its basic form a subset of the format of a bash script. The interpreter is BASH-VERSION assumed to be GNU bash, version as listed in table below, or any later version. If possible, the package manager should set the shell’s compatibility level to the exact version specified. It must ensure that any such compatibility settings (e.g. the BASH_COMPAT variable) are not exported to external programs.

EAPI	Bash version
0,1,2,3,4,5	3.2
6	4.2

Bash's failglob option

The failglob option of Bash is set in global scope, so that unintentional pattern expansion will be caught as an error. For EAPIs listed table the failglob option of bash is set in the global scope of ebuilds. FAILGLOB If set, failed pattern matches during filename expansion result in an error when the ebuild is being sourced

EAPI	GNU find?	failglob in global scope?
0,1,2,3,4	Undefined	No
5	Yes	No
6	Yes	Yes

Locale settings

It is ensured that the behavior of case modification and collation order for ASCII characters (LC_CTYPE and LC_COLLATE) are the same as in the POSIX locale. The package manager must ensure that the LC_CTYPE and LC_COLLATE locale categories are equivalent to the POSIX locale, as far as characters in the ASCII range (U+0000 to U+007F) are concerned. Only for EAPIs listed in such a manner in table.

EAPI	Sane LC_CTYPE and LC_COLLATE?
0,1,2,3,4,5	No
6	Yes