dev-cpp/muParser: port to EAPI 7

Signed-off-by: Sam James <sam@gentoo.org>

dev-cpp/muParser/muParser-2.2.6.1.ebuild

@@ -1,13 +1,12 @@
 # Copyright 1999-2021 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
-EAPI=5
-
-inherit epatch
+EAPI=7
 
 DESCRIPTION="Library for parsing mathematical expressions"
 HOMEPAGE="http://muparser.beltoforion.de/"
 SRC_URI="https://github.com/beltoforion/muparser/archive/v${PV}.tar.gz -> ${P}.tar.gz"
+S="${WORKDIR}"/muparser-${PV}
 
 LICENSE="MIT"
 SLOT="0"
@@ -15,10 +14,13 @@ KEYWORDS="amd64 ~arm ~arm64 ~ppc ~ppc64 x86 ~amd64-linux ~x86-linux ~ppc-macos"
 IUSE="doc test"
 RESTRICT="!test? ( test )"
 
-S=${WORKDIR}/muparser-${PV}
+PATCHES=(
+	"${FILESDIR}"/${PN}-1.32-parallel-build.patch
+)
 
 src_prepare() {
-	epatch "${FILESDIR}"/${PN}-1.32-parallel-build.patch
+	default
+
 	sed -i \
 		-e 's:-O2::g' \
 		configure || die