--- /var/paludis/repositories/gentoo/dev-libs/boost/boost-1.35.0-r2.ebuild	2008-09-01 14:37:20.000000000 -0400
+++ /tmp/boost-1.35.0-r2.ebuild	2009-02-26 12:18:01.102986727 -0500
@@ -15,7 +15,22 @@
 	mirror://gentoo/boost-patches-${PATCHSET_VERSION}.tbz2"
 LICENSE="freedist Boost-1.0"
 SLOT="0"
-IUSE="debug doc expat icu mpi tools"
+# prefix these with 'boost_libs_' if USE_EXPAND="BOOST_LIBS" is added to base profile
+IUSE_BOOST_LIBS="
+	filesystem
+	iostreams
+	program_options
+	python
+	regex
+	serialization
+	signals
+	thread
+	wave
+	date_time
+	graph
+	test
+"
+IUSE="${IUSE_BOOST_LIBS} debug doc expat icu mpi tools"
 
 RDEPEND="icu? ( >=dev-libs/icu-3.3 )
 	expat? ( dev-libs/expat )
@@ -83,9 +98,18 @@
 		OPTIONS="${OPTIONS} -sEXPAT_INCLUDE=/usr/include -sEXPAT_LIBPATH=/usr/$(get_libdir)"
 	fi
 
-	if ! use mpi ; then
-		OPTIONS="${OPTIONS} --without-mpi"
-	fi
+	! use mpi && OPTIONS="${OPTIONS} --without-mpi"
+	! use filesystem && OPTIONS="${OPTIONS} --without-filesystem"
+	! use iostreams && OPTIONS="${OPTIONS} --without-iostreams"
+	! use python && OPTIONS="${OPTIONS} --without-python"
+	! use regex && OPTIONS="${OPTIONS} --without-regex"
+	! use serialization && OPTIONS="${OPTIONS} --without-serialization"
+	! use signals && OPTIONS="${OPTIONS} --without-signals"
+	! use thread && OPTIONS="${OPTIONS} --without-thread"
+	! use wave && OPTIONS="${OPTIONS} --without-wave"
+	! use date_time && OPTIONS="${OPTIONS} --without-date_time"
+	! use graph && OPTIONS="${OPTIONS} --without-graph"
+	! use test && OPTIONS="${OPTIONS} --without-test"
 
 	OPTIONS="${OPTIONS} --user-config=${S}/user-config.jam --boost-build=/usr/share/boost-build"
 }