Remove FEATURES=parse-eapi-ebuild-head

It's already been enabled by default in stable portage for awhile now,
so it should be safe to enable it unconditionally. The PMS eapi-5
branch also says that it's mandatory to parse the EAPI:

http://git.overlays.gentoo.org/gitweb/?p=proj/pms.git;a=commit;h=91d1e1e39b034bde7e5b981a5616a127135f37fa

6 files changed, 4 insertions, 25 deletions

diff --git a/cnf/make.globals b/cnf/make.globals
index ce3555470..dad28118c 100644
--- a/cnf/make.globals
+++ b/cnf/make.globals
@@ -53,7 +53,7 @@ FETCHCOMMAND_SFTP="bash -c \"x=\\\${2#sftp://} ; host=\\\${x%%/*} ; port=\\\${ho
 # Default user options
 FEATURES="assume-digests binpkg-logs
           config-protect-if-modified distlocks ebuild-locks
-          fixlafiles news parallel-fetch parse-eapi-ebuild-head protect-owned
+          fixlafiles news parallel-fetch protect-owned
           sandbox sfperms strict unknown-features-warn unmerge-logs
           unmerge-orphans userfetch"
 
diff --git a/man/make.conf.5 b/man/make.conf.5
index 011866774..d9babe10f 100644
--- a/man/make.conf.5
+++ b/man/make.conf.5
@@ -420,11 +420,6 @@ Use finer\-grained locks when installing packages, allowing for greater
 parallelization. For additional parallelization, disable
 \fIebuild\-locks\fR.
 .TP
-.B parse\-eapi\-ebuild\-head
-Parse \fBEAPI\fR from the head of the ebuild as specified in PMS section
-7.3.1, and treat non\-conformant ebuilds as invalid. This feature is
-enabled by default, and will soon become enabled unconditionally.
-.TP
 .B prelink\-checksums
 If \fBprelink\fR(8) is installed then use it to undo any prelinks on files
 before computing checksums for merge and unmerge. This feature is
diff --git a/pym/_emerge/EbuildMetadataPhase.py b/pym/_emerge/EbuildMetadataPhase.py
index 9ab03e24e..669b4ae2e 100644
--- a/pym/_emerge/EbuildMetadataPhase.py
+++ b/pym/_emerge/EbuildMetadataPhase.py
@@ -142,8 +142,7 @@ class EbuildMetadataPhase(SubProcess):
 	def _set_returncode(self, wait_retval):
 		SubProcess._set_returncode(self, wait_retval)
 		# self._raw_metadata is None when _start returns
-		# early due to an unsupported EAPI detected with
-		# FEATURES=parse-eapi-ebuild-head
+		# early due to an unsupported EAPI
 		if self.returncode == os.EX_OK and \
 			self._raw_metadata is not None:
 			metadata_lines = _unicode_decode(b''.join(self._raw_metadata),
@@ -164,8 +163,7 @@ class EbuildMetadataPhase(SubProcess):
 				if (not metadata["EAPI"] or self.eapi_supported) and \
 					metadata["EAPI"] != parsed_eapi:
 					self._eapi_invalid(metadata)
-					if 'parse-eapi-ebuild-head' in self.settings.features:
-						metadata_valid = False
+					metadata_valid = False
 
 			if metadata_valid:
 				# Since we're supposed to be able to efficiently obtain the
diff --git a/pym/portage/const.py b/pym/portage/const.py
index 6dffc5d06..3b8e350a2 100644
--- a/pym/portage/const.py
+++ b/pym/portage/const.py
@@ -99,7 +99,6 @@ SUPPORTED_FEATURES       = frozenset([
                            "metadata-transfer", "mirror", "multilib-strict", "news",
                            "noauto", "noclean", "nodoc", "noinfo", "noman",
                            "nostrip", "notitles", "parallel-fetch", "parallel-install",
-                           "parse-eapi-ebuild-head",
                            "prelink-checksums",
                            "protect-owned", "python-trace", "sandbox",
                            "selinux", "sesandbox", "sfperms",
diff --git a/pym/portage/package/ebuild/_eapi_invalid.py b/pym/portage/package/ebuild/_eapi_invalid.py
index d23677d23..bcf1f7fcd 100644
--- a/pym/portage/package/ebuild/_eapi_invalid.py
+++ b/pym/portage/package/ebuild/_eapi_invalid.py
@@ -28,19 +28,6 @@ def eapi_invalid(self, cpv, repo_name, settings,
 			"assignment on line: %s") %
 			(eapi_var, eapi_lineno))
 
-	if 'parse-eapi-ebuild-head' in settings.features:
-		msg.extend(textwrap.wrap(("NOTE: This error will soon"
-			" become unconditionally fatal in a future version of Portage,"
-			" but at this time, it can by made non-fatal by setting"
-			" FEATURES=-parse-eapi-ebuild-head in"
-			" make.conf."), 70))
-	else:
-		msg.extend(textwrap.wrap(("NOTE: This error will soon"
-			" become unconditionally fatal in a future version of Portage."
-			" At the earliest opportunity, please enable"
-			" FEATURES=parse-eapi-ebuild-head in make.conf in order to"
-			" make this error fatal."), 70))
-
 	if portage.data.secpass >= 2:
 		# TODO: improve elog permission error handling (bug #416231)
 		for line in msg:
diff --git a/pym/portage/tests/emerge/test_simple.py b/pym/portage/tests/emerge/test_simple.py
index f87170a71..77a0554c0 100644
--- a/pym/portage/tests/emerge/test_simple.py
+++ b/pym/portage/tests/emerge/test_simple.py
@@ -210,7 +210,7 @@ pkg_preinst() {
 			({"FEATURES" : "metadata-transfer"},) + \
 				emerge_cmd + ("--regen",),
 			rm_cmd + ("-rf", cachedir),
-			({"FEATURES" : "metadata-transfer parse-eapi-ebuild-head"},) + \
+			({"FEATURES" : "metadata-transfer"},) + \
 				emerge_cmd + ("--regen",),
 			rm_cmd + ("-rf", cachedir),
 			egencache_cmd + ("--update",) + tuple(egencache_extra_args),