Index: science/massxpert/Makefile
===================================================================
--- science/massxpert/Makefile
+++ science/massxpert/Makefile
@@ -8,16 +8,14 @@
 COMMENT=	Software suite for (bio)chemists
 
 LICENSE=	GPLv3
-LICENSE_FILE=	${WRKSRC}/LICENSE
 
 BUILD_DEPENDS=	${LOCALBASE}/libdata/pkgconfig/pthread-stubs.pc:devel/libpthread-stubs
 LIB_DEPENDS=	libexpat.so:textproc/expat2 \
 		libfontconfig.so:x11-fonts/fontconfig \
 		libfreetype.so:print/freetype2 \
-		libpcre.so:devel/pcre \
 		libpng.so:graphics/png
 
-USES=		cmake gnome qt:5 tar:bzip2 xorg
+USES=		cmake compiler:c++17-lang gnome qt:5 xorg
 USE_GITLAB=	yes
 GL_SITE=	https://salsa.debian.org/
 GL_ACCOUNT=	debichem-team