dev-haskell/multistate: new package, dep of brittany

Signed-off-by: Wolfgang E. Sanyer <WolfgangESanyer@gmail.com>

dev-haskell/multistate/Manifest

+DIST multistate-0.8.0.3.tar.gz 21505 BLAKE2B aa443171bc035504b4bc340b63d9aaaa42c9b848ddb63d0c7471f256946335fef797938c9078580d446d787ccb9fff3333c00c05b1ee8303b39781c7c2a82313 SHA512 e4405dfae45f3d7ca04f93871d6c29750390a1058c293561b681b792c31e2b44cac9ff09f3baab8b470858375a30e586d47ba64b72d2861ad6407ac124ca2ce5

dev-haskell/multistate/metadata.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
+<pkgmetadata>
+	<maintainer type="project">
+		<email>haskell@gentoo.org</email>
+		<name>Gentoo Haskell</name>
+	</maintainer>
+	<use>
+		<flag name="build-example">Build the MultiState-example example program</flag>
+	</use>
+	<longdescription>
+		When using multiple Read\/Write\/State transformers in the same monad stack,
+		it becomes necessary to lift the operations in order to affect a specific
+		transformer.
+		Using heterogeneous lists (and all kinds of GHC extensions magic),
+		this package provides transformers that remove that necessity:
+		MultiReaderT\/MultiWriterT\/MultiStateT\/MultiRWST can contain a
+		heterogeneous list of values.
+		
+		See the &lt;https://github.com/lspitzner/multistate README&gt; for
+		a longer description.
+	</longdescription>
+</pkgmetadata>

dev-haskell/multistate/multistate-0.8.0.3.ebuild

+# Copyright 1999-2020 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+# ebuild generated by hackport 0.6.7.9999
+
+CABAL_FEATURES="lib profile haddock hoogle hscolour test-suite"
+inherit haskell-cabal
+
+DESCRIPTION="like mtl's ReaderT / WriterT / StateT, but more than one contained value/type"
+HOMEPAGE="https://github.com/lspitzner/multistate"
+SRC_URI="https://hackage.haskell.org/package/${P}/${P}.tar.gz"
+
+LICENSE="BSD"
+SLOT="0/${PV}"
+KEYWORDS="~amd64 ~x86"
+IUSE="build-example"
+
+RDEPEND=">=dev-haskell/monad-control-1.0:=[profile?] <dev-haskell/monad-control-1.1:=[profile?]
+	>=dev-haskell/mtl-2.1:=[profile?] <dev-haskell/mtl-2.3:=[profile?]
+	>=dev-haskell/tagged-0.7:=[profile?] <dev-haskell/tagged-0.9:=[profile?]
+	<dev-haskell/transformers-base-0.5:=[profile?]
+	>=dev-lang/ghc-8.4.3:=
+"
+DEPEND="${RDEPEND}
+	>=dev-haskell/cabal-2.2.0.1
+	test? ( >=dev-haskell/hspec-2 <dev-haskell/hspec-2.8 )
+"
+
+src_configure() {
+	haskell-cabal_src_configure \
+		$(cabal_flag build-example build-example)
+}