--- qingy-1.0.0-r5.ebuild	2021-01-22 20:09:18.000000000 +0200
+++ qingy-1.0.0-r5.ebuild	2021-02-02 01:07:24.375302850 +0200
@@ -16,6 +16,7 @@
 SLOT="0"
 KEYWORDS="amd64 ppc x86"
 IUSE="crypt emacs gpm opensslcrypt pam static X"
+REQUIRED_USE="crypt? ( !opensslcrypt ) opensslcrypt? ( !crypt )"
 
 RDEPEND="
 	>=sys-libs/ncurses-5.7-r7:=
@@ -51,13 +52,6 @@
 	local crypto_support="--disable-crypto"
 	local emacs_support="--disable-emacs --without-lispdir"
 
-	if use crypt && use opensslcrypt; then
-		echo
-		ewarn "You can have openssl or libgcrypt as a crypto library, not both."
-		ewarn "Using libgcrypt now..."
-		echo
-	fi
-
 	use emacs && emacs_support="--enable-emacs --with-lispdir=${SITELISP}/${PN}"
 	use opensslcrypt && crypto_support="--enable-crypto=openssl"
 	use crypt && crypto_support="--enable-crypto=libgcrypt"