Index: head/devel/hs-c2hs/Makefile
===================================================================
--- head/devel/hs-c2hs/Makefile	(revision 566686)
+++ head/devel/hs-c2hs/Makefile	(revision 566687)
@@ -1,23 +1,26 @@
 # Created by: Oliver Braun <obraun@FreeBSD.org>
 # $FreeBSD$
 
 PORTNAME=	c2hs
 PORTVERSION=	0.28.6
 PORTREVISION=	6
 CATEGORIES=	devel haskell
 
 MAINTAINER=	haskell@FreeBSD.org
 COMMENT=	C->Haskell FFI tool that gives some cross-language type safety
 
 LICENSE=	GPLv2
 
+DEPRECATED=	Was used as BUILD_DEPENDS, not useful on its own
+EXPIRATION_DATE=2021-03-27
+
 USES=		cabal
 
 USE_CABAL=	alex-3.2.5 dlist-0.8.0.7 happy-1.19.12 language-c-0.8.3 syb-0.7.1
 
 PLIST_FILES=	man/man1/c2hs.1.gz
 
 post-install:
 	${INSTALL_MAN} ${WRKSRC}/doc/man1/c2hs.1 ${STAGEDIR}${MANPREFIX}/man/man1/
 
 .include <bsd.port.mk>