From 11e10ec824550554651409c089ea1095449cb672 Mon Sep 17 00:00:00 2001
From: Zac Medico <zmedico@gentoo.org>
Date: Tue, 18 Dec 2007 06:32:16 +0000
Subject: Create a PORTAGE_IUSE variable containing an egrep pattern for use by
 the QA check that's built into useq(). This allows the IUSE logic for this
 check to be isolated in the python code.

svn path=/main/trunk/; revision=8945
---
 bin/ebuild.sh           | 16 ++++++----------
 pym/portage/__init__.py | 15 +++++++++++++--
 2 files changed, 19 insertions(+), 12 deletions(-)

diff --git a/bin/ebuild.sh b/bin/ebuild.sh
index 25638be66..e88f73442 100755
--- a/bin/ebuild.sh
+++ b/bin/ebuild.sh
@@ -138,15 +138,10 @@ useq() {
 	fi
 
 	# Make sure we have this USE flag in IUSE
-	if ! hasq "${u}" ${IUSE} ${E_IUSE} && \
-		! hasq "+${u}" ${IUSE} ${E_IUSE} && \
-		! hasq "-${u}" ${IUSE} ${E_IUSE} && \
-		! hasq "${u}" ${PORTAGE_ARCHLIST} selinux && \
-		[[ ${u} != arch_* ]] && \
-		[[ ${u} != elibc_* ]] && \
-		[[ ${u} != kernel_* ]] && \
-		[[ ${u} != userland_* ]] ; then
-		eqawarn "QA Notice: USE Flag '${u}' not in IUSE for ${CATEGORY}/${PF}"
+	if [[ ${EBUILD_PHASE} != depend ]] && [[ -n ${PORTAGE_IUSE} ]] ; then
+		echo "${u}" | egrep -q "${PORTAGE_IUSE}" || \
+			eqawarn "QA Notice: USE Flag '${u}' not" \
+				"in IUSE for ${CATEGORY}/${PF}"
 	fi
 
 	if hasq ${u} ${USE} ; then
@@ -1367,7 +1362,8 @@ READONLY_EBUILD_METADATA="DEPEND DESCRIPTION
 
 READONLY_PORTAGE_VARS="D EBUILD EBUILD_PHASE \
 	EBUILD_SH_ARGS EMERGE_FROM FILESDIR PORTAGE_BINPKG_FILE \
-	PORTAGE_BIN_PATH PORTAGE_PYM_PATH PORTAGE_MUTABLE_FILTERED_VARS \
+	PORTAGE_BIN_PATH PORTAGE_IUSE \
+	PORTAGE_PYM_PATH PORTAGE_MUTABLE_FILTERED_VARS \
 	PORTAGE_SAVED_READONLY_VARS PORTAGE_TMPDIR T WORKDIR"
 
 PORTAGE_SAVED_READONLY_VARS="A CATEGORY P PF PN PR PV PVR"
diff --git a/pym/portage/__init__.py b/pym/portage/__init__.py
index 9e2f424ce..1cdbda2c8 100644
--- a/pym/portage/__init__.py
+++ b/pym/portage/__init__.py
@@ -881,6 +881,7 @@ class config(object):
 		"PORTAGE_BUILDDIR", "PORTAGE_COLORMAP",
 		"PORTAGE_CONFIGROOT", "PORTAGE_DEBUG", "PORTAGE_DEPCACHEDIR",
 		"PORTAGE_GID", "PORTAGE_INST_GID", "PORTAGE_INST_UID",
+		"PORTAGE_IUSE",
 		"PORTAGE_LOG_FILE", "PORTAGE_MASTER_PID",
 		"PORTAGE_PYM_PATH", "PORTAGE_REPO_NAME", "PORTAGE_RESTRICT",
 		"PORTAGE_TMPDIR", "PORTAGE_WORKDIR_MODE",
@@ -2396,12 +2397,12 @@ class config(object):
 			iuse_implicit = set(iuse)
 
 			# Flags derived from ARCH.
-			if arch:
-				iuse_implicit.add(arch)
+			iuse_implicit.update(self.get("PORTAGE_ARCHLIST", "").split())
 
 			# Flags derived from USE_EXPAND_HIDDEN variables
 			# such as ELIBC, KERNEL, and USERLAND.
 			use_expand_hidden = self.get("USE_EXPAND_HIDDEN", "").split()
+			use_expand_hidden_raw = use_expand_hidden
 			if use_expand_hidden:
 				use_expand_hidden = re.compile("^(%s)_.*" % \
 					("|".join(x.lower() for x in use_expand_hidden)))
@@ -2413,6 +2414,16 @@ class config(object):
 			iuse_implicit.update(x for x in self.useforce \
 				if x not in self.usemask)
 
+			iuse_grep = iuse_implicit.copy()
+			if use_expand_hidden_raw:
+				for x in use_expand_hidden_raw:
+					iuse_grep.add(x.lower() + "_.*")
+			if iuse_grep:
+				iuse_grep = "^(%s)$" % "|".join(sorted(iuse_grep))
+			else:
+				iuse_grep = ""
+			self.configdict["pkg"]["PORTAGE_IUSE"] = iuse_grep
+
 			usesplit = [x for x in usesplit if \
 				x in iuse_implicit and \
 				x not in self.usemask]
-- 
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