sci-biology/clustalw-mpi: Modernise to EAPI 6

Package-Manager: Portage-2.3.4, Repoman-2.3.2
Closes: https://github.com/gentoo/gentoo/pull/4165

sci-biology/clustalw-mpi/clustalw-mpi-0.13-r2.ebuild

@@ -1,31 +1,35 @@
 # Copyright 1999-2017 Gentoo Foundation
 # Distributed under the terms of the GNU General Public License v2
 
-EAPI=4
+EAPI=6
 
-inherit eutils toolchain-funcs
+inherit toolchain-funcs
 
 DESCRIPTION="An MPI implemention of the ClustalW general purpose multiple alignment algorithm"
 HOMEPAGE="http://www.bii.a-star.edu.sg/achievements/applications/clustalw/index.php"
 SRC_URI="http://web.bii.a-star.edu.sg/~kuobin/${PN}/${P}.tar.gz"
 
+LICENSE="public-domain"
 SLOT="0"
 KEYWORDS="~amd64 ~x86"
-LICENSE="public-domain"
 IUSE="mpi_njtree static_pairalign"
 
 DEPEND="virtual/mpi"
 RDEPEND="${DEPEND}"
 
+PATCHES=( "${FILESDIR}"/${PV}-gentoo.patch )
+
 src_prepare() {
-	epatch "${FILESDIR}"/${PV}-gentoo.patch
+	default
+
 	if use mpi_njtree; then
 		sed -e "s/TREES_FLAG/#TREES_FLAG/" -i Makefile || \
-			die "Failed to configure MPI code for NJ trees."
+			die "Failed to configure MPI code for NJ trees"
 	fi
+
 	if use static_pairalign; then
 		sed -e "s/DDYNAMIC_SCHEDULING/DSTATIC_SCHEDULING/" -i Makefile || \
-			die "Failed to configure static scheduling for pair alignments."
+			die "Failed to configure static scheduling for pair alignments"
 	fi
 }