xbps-src: autoremove pkgdeps if XBPS_PREFER_BINPKG_DEPS is set.

xbps-src/shutils/pkgtarget_funcs.sh.in

@@ -166,6 +166,16 @@ install_pkg()
 	if [ -d "$wrksrc" -a "$dontrm_builddir" = "no" ]; then
 		remove_tmpl_wrksrc $wrksrc
 	fi
+
+	#
+	# If XBPS_PREFER_BINPKG_DEPS is set, we should remove those
+	# package dependencies installed by the target package, do it.
+	#
+	if [ -n "$XBPS_PREFER_BINPKG_DEPS" ]; then
+		msg_normal "Removing binary package dependencies...\n"
+		${XBPS_BIN_CMD} -Rpyf autoremove
+	fi
+	return $?
 }
 
 #