dev-haskell/postgresql-libpq: new package, a depend of esqueleto-3.3

Package-Manager: Portage-3.0.4, Repoman-3.0.1
Signed-off-by: Sergei Trofimovich <slyfox@gentoo.org>

dev-haskell/postgresql-libpq/Manifest

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+DIST postgresql-libpq-0.9.4.2.tar.gz 31349 BLAKE2B 3f590eacc034eedeec7c9e83122ac0d52faf29dea1c0d929eaac50a199f933fe755dadaa99b6a25abb9db46b13f51a8f581fb37c628f70ab850fb599347c88bc SHA512 8bb811d8a25a09e232391412a78125a419db00bd293eaff8f0d3c652a65a5d312e3f42fae41babe9edf820adead5c243dc5a055ab16d7f9725c861b464a8d4f4

dev-haskell/postgresql-libpq/metadata.xml

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+<?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>
+	<longdescription>
+		This is a binding to libpq: the C application
+		programmer's interface to PostgreSQL. libpq is a
+		set of library functions that allow client
+		programs to pass queries to the PostgreSQL
+		backend server and to receive the results of
+		these queries.
+	</longdescription>
+</pkgmetadata>

dev-haskell/postgresql-libpq/postgresql-libpq-0.9.4.2-r2.ebuild

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+# Copyright 1999-2020 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+# ebuild generated by hackport 0.5.6.9999
+#hackport: flags: -use-pkg-config
+
+CABAL_FEATURES="lib profile haddock hoogle hscolour test-suite"
+inherit haskell-cabal
+
+DESCRIPTION="low-level binding to libpq"
+HOMEPAGE="https://github.com/phadej/postgresql-libpq"
+SRC_URI="https://hackage.haskell.org/package/${P}/${P}.tar.gz"
+
+LICENSE="BSD"
+SLOT="0/${PV}"
+KEYWORDS="~amd64 ~x86"
+IUSE=""
+
+RDEPEND=">=dev-db/postgresql-7:*
+	>=dev-lang/ghc-7.4.1:=
+"
+DEPEND="${RDEPEND}
+	>=dev-haskell/cabal-1.10 <dev-haskell/cabal-3.3
+"
+
+src_prepare() {
+	default
+
+	cabal_chdeps \
+		'base       >=4.3     && <4.13' 'base       >=4.3' \
+		'Cabal >= 1.10 && <2.5' 'Cabal >= 1.10 && <3.3'
+}
+
+src_configure() {
+	haskell-cabal_src_configure \
+		--flag=-use-pkg-config
+}