Closes: https://bugs.gentoo.org/641182
Package-Manager: Portage-2.3.18, Repoman-2.3.6
CRYPTO_BACKENDS="+gcrypt kernel nettle openssl"
# we don't support nss since it doesn't allow cryptsetup to be built statically
# and it's missing ripemd160 support so it can't provide full backward compatibility
-IUSE="${CRYPTO_BACKENDS} argon2 libressl nls pwquality python reencrypt static static-libs udev urandom"
+IUSE="${CRYPTO_BACKENDS} +argon2 libressl nls pwquality python reencrypt static static-libs udev urandom"
REQUIRED_USE="^^ ( ${CRYPTO_BACKENDS//+/} )
python? ( ${PYTHON_REQUIRED_USE} )
static? ( !gcrypt )" #496612