--- a/components/groff/Makefile	Mon Oct 12 16:53:46 2015 -0700
+++ b/components/groff/Makefile	Fri Oct 02 12:19:44 2015 +0200
@@ -111,6 +111,7 @@
 REQUIRED_PACKAGES += system/library
 REQUIRED_PACKAGES += system/library/c++-runtime
 REQUIRED_PACKAGES += system/library/math
+REQUIRED_PACKAGES += text/doctools
 REQUIRED_PACKAGES += text/gawk
 REQUIRED_PACKAGES += x11/library/libx11
 REQUIRED_PACKAGES += x11/library/libxmu